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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...

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmal...

These Black Tourmaline rock specimens will be a great addition to your rock collection! They have a deep, inky black color to them and depending on...

These Black Tourmaline rock specimens will be a great addition to your rock collection! They have a deep, inky black color to them and depending on...

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...

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...

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...

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...

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,...

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,...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...