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Tourmaline Gemstone Beads

Tourmaline Gemstone Beads

Tourmaline covers more ground in color than almost any other gemstone — black, pink, green, blue, watermelon, and every shade between, often within a single crystal. We carry the deepest tourmaline assortment in the trade: multi-color strands, true black, and single-color strands in pink, green, and blue, cut in a wide range of shapes and sizes from 2mm micro-facets up to statement nuggets. Our tourmaline is cut and processed in both China and India — the two supply chains handle tourmaline differently, so pairing them lets us keep consistent stock across a wider range of cuts than a single-source supplier can offer, giving designers more to choose from strand to strand.

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Products: 92

Black Flower Tourmaline 10mm Round - 15-16 Inch

Original price $13.00 - Original price $13.00
Original price $13.00
$13.00 - $13.00
Current price $13.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $13.00 - Original price $13.00
Original price $13.00
$13.00 - $13.00
Current price $13.00
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Black Flower Tourmaline 4mm Round - 15-16 Inch

Original price $9.00 - Original price $9.00
Original price $9.00
$9.00 - $9.00
Current price $9.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $9.00 - Original price $9.00
Original price $9.00
$9.00 - $9.00
Current price $9.00
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Black Flower Tourmaline 8mm Round - 15-16 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Black Tourmaline 10mm Round - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Black Tourmaline 4x6mm Table Cut Corner Drilled Cube Bead - 15-16 Inch

Original price $30.00 - Original price $30.00
Original price $30.00
$30.00 - $30.00
Current price $30.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $30.00 - Original price $30.00
Original price $30.00
$30.00 - $30.00
Current price $30.00
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Black Tourmaline 5-10x5-12mm Graduated Nugget Bead - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00 - $32.00
Current price $32.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00 - $32.00
Current price $32.00
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Black Tourmaline 5x10-20mm Top Drill Teeth - 15-16-Inch

Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Black Tourmaline 7x8mm Faceted Swirl Oval - 15-16 Inch

Original price $27.00 - Original price $27.00
Original price $27.00
$27.00 - $27.00
Current price $27.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $27.00 - Original price $27.00
Original price $27.00
$27.00 - $27.00
Current price $27.00
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Black Tourmaline 8mm Round A Grade - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Black Tourmaline 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Blue Tourmaline 2mm Round Faceted AAA Grade - Microfaceted Rounds - 15-16 inch

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Blue Tourmaline 3mm Banded Faceted Round - 15 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00 - $16.00
Current price $16.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $16.00 - Original price $16.00
Original price $16.00
$16.00 - $16.00
Current price $16.00
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Blue Tourmaline 3mm Round Faceted - Microfaceted Rounds - 15-16 inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00 - $26.00
Current price $26.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $26.00 - Original price $26.00
Original price $26.00
$26.00 - $26.00
Current price $26.00
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Blue Tourmaline 3mm Table Cut Cube A Grade - 15-16 Inch

Original price $37.00 - Original price $37.00
Original price $37.00
$37.00 - $37.00
Current price $37.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $37.00 - Original price $37.00
Original price $37.00
$37.00 - $37.00
Current price $37.00
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Blue Tourmaline 4mm Microfaceted Round A Grade - 15-16 Inch

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Blue Tourmaline 4mm Round Faceted - 15-16 Inch

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Blue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum bo...

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Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
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Green and Yellow Banded Tourmaline 4mm Faceted Coin - 15-16 Inch

Original price $43.00 - Original price $43.00
Original price $43.00
$43.00 - $43.00
Current price $43.00
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Green Tourmaline ranges in color from pale green to dark emerald to shades of olive and moss green. It is an aluminum borosilicate mixed with iron,...

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Original price $43.00 - Original price $43.00
Original price $43.00
$43.00 - $43.00
Current price $43.00
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Green Tourmaline 4mm Faceted Round - 15-16 Inch

Original price $9.00 - Original price $9.00
Original price $9.00
$9.00 - $9.00
Current price $9.00
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Green Tourmaline ranges in color from pale green to dark emerald to shades of olive and moss green. It is an aluminum borosilicate mixed with iron,...

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Original price $9.00 - Original price $9.00
Original price $9.00
$9.00 - $9.00
Current price $9.00
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Multi Tourmaline 10mm Round - 15-16 Inch

Original price $44.00 - Original price $44.00
Original price $44.00
$44.00 - $44.00
Current price $44.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $44.00 - Original price $44.00
Original price $44.00
$44.00 - $44.00
Current price $44.00
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Multi Tourmaline 10mm Round Large Hole Beads - 8-inch

Original price $27.00 - Original price $27.00
Original price $27.00
$27.00 - $27.00
Current price $27.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $27.00 - Original price $27.00
Original price $27.00
$27.00 - $27.00
Current price $27.00
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Multi Tourmaline 2-3x4-5mm Banded Faceted Rondelle Beads - 15-16 Inch

Original price $119.00 - Original price $119.00
Original price $119.00
$119.00 - $119.00
Current price $119.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $119.00 - Original price $119.00
Original price $119.00
$119.00 - $119.00
Current price $119.00
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Multi Tourmaline 2-4x5-6mm Banded Faceted Rondelle Beads - 15-16 Inch

Original price $65.00 - Original price $65.00
Original price $65.00
$65.00 - $65.00
Current price $65.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $65.00 - Original price $65.00
Original price $65.00
$65.00 - $65.00
Current price $65.00
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Multi Tourmaline 2mm Cube Table Cut A Grade Bead - 15-16 Inch

Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Multi Tourmaline 2mm Cube Table Cut Banded Bead - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Multi Tourmaline 2mm Faceted Coin - 15-16 Inch

Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Multi Tourmaline 2mm Faceted Cube - 15-16 Inch

Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Multi Tourmaline 2mm Faceted Cube A Grade - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Multi Tourmaline 2mm Faceted Round AA Grade - 15-16 Inch

Regular Price $24.00
Original price $24.00 - Original price $24.00
Original price $24.00
Sale Price $10.00
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$10.00 - $10.00
Current price $10.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Regular Price $24.00
Original price $24.00 - Original price $24.00
Original price $24.00
Sale Price $10.00
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$10.00 - $10.00
Current price $10.00
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Sale Sale

Multi Tourmaline 2x3mm Rondelle Faceted - 15-16 Inch

Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $15.00 - Original price $15.00
Original price $15.00
$15.00 - $15.00
Current price $15.00
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Multi Tourmaline 2x3mm Rondelle Faceted A Grade- 15-16 Inch

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
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Multi Tourmaline 3-5mm Banded Chip A Grade - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Multi Tourmaline 3-5x5-6mm Banded Faceted Rondelle Beads - 13 Inch

Original price $59.00 - Original price $59.00
Original price $59.00
$59.00 - $59.00
Current price $59.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $59.00 - Original price $59.00
Original price $59.00
$59.00 - $59.00
Current price $59.00
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Multi Tourmaline 3mm Banded Faceted Round - 15 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Multi Tourmaline 3mm Banded Table Cut Cube - 15-16 Inch

Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
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Multi Tourmaline 3mm Faceted Round - 15 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
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Multi Tourmaline 3mm Round - 15-16 Inch

Original price $25.00 - Original price $25.00
Original price $25.00
$25.00 - $25.00
Current price $25.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $25.00 - Original price $25.00
Original price $25.00
$25.00 - $25.00
Current price $25.00
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Multi Tourmaline 3mm Round Faceted AA Grade Banded (Light)- 15-16 Inch

Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
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Multi Tourmaline 3mm Round Faceted AA Grade Banded - 15-16 Inch

Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
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Multi Tourmaline 3mm Round Faceted- 15-16 Inch

Original price $12.00 - Original price $12.00
Original price $12.00
$12.00 - $12.00
Current price $12.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $12.00 - Original price $12.00
Original price $12.00
$12.00 - $12.00
Current price $12.00
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Multi Tourmaline 3x4mm Faceted Rondelle - 15-16 Inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00 - $26.00
Current price $26.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $26.00 - Original price $26.00
Original price $26.00
$26.00 - $26.00
Current price $26.00
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Multi Tourmaline 4-6mm Banded Chip A Grade - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
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Multi Tourmaline 4-6x8-9mm Irregular Rondelle Bead - 15-16 Inch

Original price $56.00 - Original price $56.00
Original price $56.00
$56.00 - $56.00
Current price $56.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $56.00 - Original price $56.00
Original price $56.00
$56.00 - $56.00
Current price $56.00
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Multi Tourmaline 4mm Banded Blue/Green Microfaceted Round - 15-16 Inch

Regular Price $31.00
Original price $31.00 - Original price $31.00
Original price $31.00
Sale Price $22.00
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$22.00 - $22.00
Current price $22.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

View full details
Regular Price $31.00
Original price $31.00 - Original price $31.00
Original price $31.00
Sale Price $22.00
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$22.00 - $22.00
Current price $22.00
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Sale Sale

Multi Tourmaline 4mm Cube Table Cut Bead - 15-16 Inch

Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
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Multi Tourmaline 4mm Faceted Coin Beads - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
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Multi Tourmaline 4mm Faceted Round AAA Grade Beads - 15-16 Inch

Original price $72.00 - Original price $72.00
Original price $72.00
$72.00 - $72.00
Current price $72.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $72.00 - Original price $72.00
Original price $72.00
$72.00 - $72.00
Current price $72.00
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Multi Tourmaline 4mm Microfaceted Round - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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Multi Tourmaline 4mm Round - 15-16 Inch

Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to...

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Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Every Color, One Strand

Every Color, One Strand

Multi-tourmaline is our signature cut of this stone — strands that run through tourmaline's full color range in a single piece, sometimes color-banded, sometimes gradually variegated bead to bead. No two strands come out quite the same, since the color zoning happens naturally in the crystal. Used whole, a multi strand works as a built-in palette; used sparingly, a single bead can be pulled and echoed in a solid-color piece elsewhere in the design. This is our deepest tourmaline offering — rounds, coins, rondelles, cubes, and more, 2mm to 10mm.
A True Black, With Purpose

A True Black, With Purpose

Black tourmaline (schorl) is prized for its dense, opaque, true-black color and a slightly greasy luster that reads differently than onyx or black agate under light. It's an anchor stone in design — it grounds a bright palette and holds its own next to silver or gold — and it's just as popular for its holistic reputation: worn as a grounding and protective stone, believed to absorb negative energy, and often reached for to support emotional balance and a sense of stability. At Mohs 7–7.5 it wears well daily. Stocked in 4–10mm rounds, table-cut cubes, graduated nuggets, and top-drilled teeth and drops.
Single-Color Tourmaline

Single-Color Tourmaline

Beyond multi-color and black, tourmaline also comes one color to a strand. Pink runs pale rose to deep raspberry (rubellite at the saturated end); green sits in deep bottle and olive tones (verdelite); blue — indicolite — is the rarest of the line, stocked small at 2–4mm and faceted. Pink, green, and blue material is routinely heat-treated to clear and steady the tone, a stable, industry-standard treatment. These solid strands are the building blocks for designers who want a single, consistent tourmaline color rather than the variation of a multi strand.

About this stone

Color
PinkGreenBlueRedWatermelon (pink-green zoning)BlackMulti-Color
Origin
BrazilMozambiqueNigeriaAfghanistanUSA (Maine, California)Madagascar
Mohs hardness
7–7.5
Treatment categories
NaturalHeated
Industry-standard treatment
Heat treatment for pink, green, and blue varieties
Mineral chemistry
Complex borosilicate (elbaite, schorl, dravite, liddicoatite, uvite)
Crystal system
Trigonal
Stone family
Tourmaline
Birthstone
October
Common cuts
Faceted RondelleMicrofaceted RondelleSmoothSlice (watermelon)
Common sizes
2mm3mm4mm6mm8mm
Care notes
Durable (Mohs 7–7.5). Mild soap and soft cloth; avoid sudden temperature changes.
Related stones
Garnet, Spinel, Aquamarine

Frequently asked questions

  • Is tourmaline real, or is it dyed?
    Tourmaline is a single-crystal silicate with characteristic transparency or translucency. Dyed glass, dyed agate, and composite material are sometimes sold as "tourmaline" or "watermelon tourmaline" in the cheap-bead market — those are different categories. Real watermelon tourmaline shows the pink-to-green color transition along a single crystal axis; dyed glass does not. Material category should be disclosed — ask if a strand doesn't specify whether it's natural tourmaline or composite.
  • Is tourmaline heat-treated?
    Often, yes. Pink (rubellite), green (verdelite), and blue (indicolite) tourmaline are routinely heated at 600–700°C to lighten dark material or to clean color tones. The treatment is permanent, stable, and accepted across the global trade. Watermelon tourmaline is typically untreated because the visible color zoning is the buying decision. Black tourmaline (schorl) and chrome tourmaline are almost never treated. Treatment status (Natural or Heat-Treated) should be disclosed — ask before buying if a strand doesn't specify.
  • Is rubellite the same as pink tourmaline?
    Yes — *rubellite* is the trade name for saturated red-pink tourmaline. Lighter pink elbaite is generally just called "pink tourmaline." There is no hard chemistry boundary; the distinction is color saturation.
  • What is watermelon tourmaline, and is it natural?
    Watermelon tourmaline is a single elbaite crystal that grew with a pink core and green rim, sliced perpendicular to the crystal axis to display the color zoning. The zoning is natural — it formed during crystal growth as the trace-element chemistry of the surrounding fluid changed. Watermelon is typically untreated. The zoning has to be both attractive and well-positioned for the slice to show, which is why fully-zoned watermelon is less common than off-zoned material.
  • What's the difference between Paraíba and other blue-green tourmaline?
    Paraíba tourmaline is copper-bearing tourmaline, producing a uniquely vivid neon blue-green that other tourmaline copper-free chemistries cannot match. The original deposit is in Paraíba State, Brazil (1989); the trade name has since broadened to include copper-bearing tourmaline from Mozambique and Nigeria, which is similar in appearance but typically more available and lower-priced than Brazilian Paraíba. Deposit / origin should be disclosed when known — ask if a strand doesn't specify. Bead-grade Paraíba is rare; most beads in this color range are African copper-bearing tourmaline.