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16-Inch Gemstones

The 16-inch strand is the industry standard—and no one stocks more of them than Dakota Stones. Browse more than 200 stone types across every color and pattern, from everyday staples like Amethyst and Jasper to collector favorites such as Red Garnet and rare Turquoise mine-runs. Because the strands measure a full 15 – 16 inches, you get enough beads for matching earring pairs, stretch bracelets, or a necklace focal and still have extras for accents.
Need to drill down fast? Use the filter bar to sort by Stone Type when you know the gem you want, or by Color when you’re building a palette first. Shapes range from classic rounds and rondelles to cubes, heishi, chips, and rare designer cuts—each strand calibrated for even sizing and smooth stringing.
Whether you’re a hobbyist replenishing a bead board or a pro assembling a full production run, this category is the workhorse of our catalog: reliable lengths, vast variety, and new additions arriving every month. Dive in, filter your way to the perfect strand, and keep your design queue flowing with Dakota Stones’ biggest collection.

Products: 2360

Larimar 4mm Faceted Round AA Grade - 15-16 Inch

Original price $64.00 - Original price $64.00
Original price $64.00
$64.00
$64.00 - $64.00
Current price $64.00

Larimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation...

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Original price $64.00 - Original price $64.00
Original price $64.00
$64.00
$64.00 - $64.00
Current price $64.00

Larimar 6x8mm Faceted Rondelle A Grade - 15-16 Inch

Original price $117.00 - Original price $117.00
Original price $117.00
$117.00
$117.00 - $117.00
Current price $117.00

Larimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation...

View full details
Original price $117.00 - Original price $117.00
Original price $117.00
$117.00
$117.00 - $117.00
Current price $117.00

Larimar 4mm Heishi with Matrix - 15-16 Inch

Original price $45.00 - Original price $45.00
Original price $45.00
$45.00
$45.00 - $45.00
Current price $45.00

Larimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation...

View full details
Original price $45.00 - Original price $45.00
Original price $45.00
$45.00
$45.00 - $45.00
Current price $45.00

Larimar 6-12mm Graduated Rondelle with Matrix - 15-16 Inch

Original price $79.00 - Original price $79.00
Original price $79.00
$79.00
$79.00 - $79.00
Current price $79.00

Larimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation...

View full details
Original price $79.00 - Original price $79.00
Original price $79.00
$79.00
$79.00 - $79.00
Current price $79.00

Larimar 5x8mm Rondelle with Matrix - 15-16 Inch

Original price $49.00 - Original price $49.00
Original price $49.00
$49.00
$49.00 - $49.00
Current price $49.00

Larimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation...

View full details
Original price $49.00 - Original price $49.00
Original price $49.00
$49.00
$49.00 - $49.00
Current price $49.00

Multi Spinel 3mm Table Cut Cube - AA Grade - 15-16 Inch

Original price $41.00 - Original price $41.00
Original price $41.00
$41.00
$41.00 - $41.00
Current price $41.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

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Original price $41.00 - Original price $41.00
Original price $41.00
$41.00
$41.00 - $41.00
Current price $41.00

Multi Spinel 2.5mm Table Cut Cube AA Grade - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Multi Spinel 4mm Faceted Round AA Grade - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$34.00
$34.00 - $34.00
Current price $34.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

View full details
Original price $32.00 - Original price $32.00
Original price $32.00
$34.00
$34.00 - $34.00
Current price $34.00

Multi Spinel 3mm Faceted Round AA Grade - 15-16 Inch

Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

View full details
Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Multi Spinel 2x3mm Faceted Rondelle AA Grade - 15-16 Inch

Original price $52.00 - Original price $52.00
Original price $52.00
$52.00
$52.00 - $52.00
Current price $52.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

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Original price $52.00 - Original price $52.00
Original price $52.00
$52.00
$52.00 - $52.00
Current price $52.00

Multi Spinel 1.5x2mm Faceted Rondelle AA Grade - 15-16 Inch

Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

View full details
Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Multi Spinel 2mm Faceted Round AA Grade - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

View full details
Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Dog Teeth Amethyst 2x6mm Thin Rondelle - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00
$18.00 - $18.00
Current price $18.00

Dog Teeth Amethyst has a purple and white striped appearance due to its combination of Amethyst and White Quartz. The name derives from the recurri...

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Original price $18.00 - Original price $18.00
Original price $18.00
$18.00
$18.00 - $18.00
Current price $18.00

Rhodonite 2x6mm Thin Rondelle - 15-16 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Rhodonite, whose name is derived from the Greek word for Rose, “rhodon,” is known for its pink, red and magenta hues. A Manganese inosilicate (or c...

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Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Crazy Lace Agate 2x6mm Thin Rondelle - 15-16 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Crazy Lace Agate is a banded Chalcedony that naturally occurs as golden brown with layers of pink, red and gray in swirling circular patterns. It h...

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Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Fancy Jasper 2x6mm Thin Rondelle - 15-16 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00
$14.00 - $14.00
Current price $14.00

Fancy Jasper, also known as Rainbow Jasper, ranges in color from light to dark green, deep red, tan, cream, pink and mauve. It is a chalcedony beli...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00
$14.00 - $14.00
Current price $14.00

Red Aventurine 2x6mm Thin Rondelle - 15-16 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00
$14.00 - $14.00
Current price $14.00

Red Aventurine is a peach to orange colored translucent Quartz with inclusions of Mica or other minerals. These inclusions give it a glistening eff...

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Original price $14.00 - Original price $14.00
Original price $14.00
$14.00
$14.00 - $14.00
Current price $14.00

Sunstone 13x15mm Faceted Top Drilled Irregular Tear Drop - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Sunstone, a variety of Feldspar, is aptly named for its shades of gold, orange, red and brown, as well as its iridescent sparkle. As the stone catc...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Lapis 13x15mm Faceted Top Drilled Irregular Tear Drop - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Lapis is a semi to precious stone and one of the most sought after throughout history. It is highly regarded for its beautiful blue color flecked w...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Rose Quartz 13x15mm Faceted Top Drilled Irregular Tear Drop - 15-16 Inch

Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Rose Quartz is a silicon dioxide crystal and one of the most common varieties of the Quartz family. It is a translucent to transparent stone with a...

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Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Black Obsidian 13x15mm Faceted Top Drilled Irregular Tear Drop - 15-16 Inch

Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

0

Original price $28.00 - Original price $28.00
Original price $28.00
$28.00
$28.00 - $28.00
Current price $28.00

Diopside 4mm Faceted Round AA Grade - 15-16 Inch

Original price $61.00 - Original price $61.00
Original price $61.00
$61.00
$61.00 - $61.00
Current price $61.00

Diopside is a calcium and magnesium silicate mineral. It is transparent or translucent, and can display a nearly emerald green color due to the pre...

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Original price $61.00 - Original price $61.00
Original price $61.00
$61.00
$61.00 - $61.00
Current price $61.00

Diopside 6mm Faceted Round A Grade - 15-16 Inch

Original price $88.00 - Original price $88.00
Original price $88.00
$88.00
$88.00 - $88.00
Current price $88.00

Diopside is a calcium and magnesium silicate mineral. It is transparent or translucent, and can display a nearly emerald green color due to the pre...

View full details
Original price $88.00 - Original price $88.00
Original price $88.00
$88.00
$88.00 - $88.00
Current price $88.00

Diopside 2.5mm Table Cut Cube Bead - 15-16 Inch

Original price $61.00 - Original price $61.00
Original price $61.00
$61.00
$61.00 - $61.00
Current price $61.00

Diopside is a calcium and magnesium silicate mineral. It is transparent or translucent, and can display a nearly emerald green color due to the pre...

View full details
Original price $61.00 - Original price $61.00
Original price $61.00
$61.00
$61.00 - $61.00
Current price $61.00

Diopside 2x3mm Faceted Rondelle AA Grade - 15-16 Inch

Original price $52.00 - Original price $52.00
Original price $52.00
$52.00
$52.00 - $52.00
Current price $52.00

Diopside is a calcium and magnesium silicate mineral. It is transparent or translucent, and can display a nearly emerald green color due to the pre...

View full details
Original price $52.00 - Original price $52.00
Original price $52.00
$52.00
$52.00 - $52.00
Current price $52.00

Strawberry Quartz 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Strawberry Quartz is a translucent, milky to pink silicon dioxide mineral. Its needle to like inclusions of hematite are iridescent red. Quartz has...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Green Aventurine 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Green Aventurine is a green translucent quartz with glimmering metallic inclusions. Green is the most common color for Aventurine, but it can also ...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Sodalite 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Sodalite is named for its sodium content and may be classified as a feldspathoid. Blue Sodalite is sometimes referred to as “poor man’s lapis” beca...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Rose Quartz 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Rose Quartz is a silicon dioxide crystal and one of the most common varieties of the Quartz family. It is a translucent to transparent stone with a...

View full details
Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Labradorite 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Labradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Brazilian Amazonite 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Brazilian Amazonite is an opaque blue to green to light green stone, often occurring with inclusions of white, yellow or gray and occasionally tran...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Sunstone 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Sunstone, a variety of Feldspar, is aptly named for its shades of gold, orange, red and brown, as well as its iridescent sparkle. As the stone catc...

View full details
Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Crystal Quartz 6x11mm Side Drilled Points - 15-16-Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Crystal Quartz is a naturally occurring clear and colorless Quartz. It is a crystalline form of Quartz said to have many divine properties includin...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Tiger Eye 8mm Faceted Puff Square - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Tiger Eye is a macrocrystalline Quartz stone with bands of rich golds and browns. Its chatoyant layers that create a flash which seems to emanate f...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Labradorite 8mm Faceted Puff Square A Grade - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Labradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This...

View full details
Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Amethyst 8mm Faceted Puff Square - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Amethyst is a beautiful purple stone, known as a “Gem of Fire” by ancient cultures. It has been greatly sought after throughout history and was at ...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Strawberry Quartz 8mm Faceted Puff Heart - 15-16 Inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Strawberry Quartz is a translucent, milky to pink silicon dioxide mineral. Its needle to like inclusions of hematite are iridescent red. Quartz has...

View full details
Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Labradorite 8mm Faceted Puff Heart A Grade - 15-16 Inch

Original price $31.00 - Original price $31.00
Original price $31.00
$31.00
$31.00 - $31.00
Current price $31.00

Labradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This...

View full details
Original price $31.00 - Original price $31.00
Original price $31.00
$31.00
$31.00 - $31.00
Current price $31.00

Black Obsidian 8mm Faceted Puff Heart - 15-16 Inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

0

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Rose Quartz 8mm Faceted Puff Heart A Grade - 15-16 Inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Rose Quartz is a silicon dioxide crystal and one of the most common varieties of the Quartz family. It is a translucent to transparent stone with a...

View full details
Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Amethyst 8mm Faceted Puff Heart - 15-16 Inch

Original price $31.00 - Original price $31.00
Original price $31.00
$31.00
$31.00 - $31.00
Current price $31.00

Amethyst is a beautiful purple stone, known as a “Gem of Fire” by ancient cultures. It has been greatly sought after throughout history and was at ...

View full details
Original price $31.00 - Original price $31.00
Original price $31.00
$31.00
$31.00 - $31.00
Current price $31.00

Tanzanite 3mm Round Faceted Banded AAA Grade - 15-16 Inch

Original price $39.00 - Original price $39.00
Original price $39.00
$39.00
$39.00 - $39.00
Current price $39.00

Tanzanite is both extremely rare and extremely attractive, and we offer it when we can.

Original price $39.00 - Original price $39.00
Original price $39.00
$39.00
$39.00 - $39.00
Current price $39.00

Tanzanite 3mm Round Faceted AAA Grade - 15-16 Inch

Original price $37.00 - Original price $37.00
Original price $37.00
$37.00
$37.00 - $37.00
Current price $37.00

Tanzanite is both extremely rare and extremely attractive, and we offer it when we can.

Original price $37.00 - Original price $37.00
Original price $37.00
$37.00
$37.00 - $37.00
Current price $37.00

Kunzite 4mm Round Faceted AA Grade - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

Kunzite was named after a former Tiffany & Co. vice president, famed mineralogist and jeweler George Frederick Kunz, who first catalogued the s...

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Original price $32.00 - Original price $32.00
Original price $32.00
$32.00
$32.00 - $32.00
Current price $32.00

White Howlite 8mm Faceted Bicone - 15-16 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

White Howlite is named for Canadian mineralogist Henry How, who first discovered the stone in Southern California in 1868. It is typically white or...

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Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Tiger Eye 8mm Faceted Bicone - 15-16 Inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Tiger Eye is a macrocrystalline Quartz stone with bands of rich golds and browns. Its chatoyant layers that create a flash which seems to emanate f...

View full details
Original price $16.00 - Original price $16.00
Original price $16.00
$16.00
$16.00 - $16.00
Current price $16.00

Smoky Quartz 8mm Faceted Bicone - 15-16 Inch

Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Smoky Quartz is a translucent smoky brown or gray variety of Quartz. It ranges from almost completely transparent to an almost opaque brownish to g...

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Original price $26.00 - Original price $26.00
Original price $26.00
$26.00
$26.00 - $26.00
Current price $26.00

Golden Gray Moonstone 8mm Faceted Bicone - 15-16 Inch

Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Moonstone naturally occurs in a broad spectrum of colors, but is most commonly associated with white, gray and peach. It's soft chatoyancy is remin...

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Original price $24.00 - Original price $24.00
Original price $24.00
$24.00
$24.00 - $24.00
Current price $24.00

Frequently asked questions

  • What is a 16-inch strand and why is it the trade standard?
    A 16-inch strand is the working length most US jewelry designers buy for design-grade work — necklaces, multi-strand layouts, and bulk component sourcing. It gives enough beads to lay out a full 18–20 inch necklace with clasp and findings, or to cut down into shorter assemblies without running short. The 16-inch length has been the trade default for decades because it standardizes pricing and bead-count math across stones and cuts. Dakota's 16-inch hub covers the full catalog at this length, across rounds, rondelles, faceted cuts, cubes, coins, and shape work. The bracelet counterpart is the 8-inch strand.
  • How many beads per 16-inch strand at common sizes?
    Approximate bead counts per 16-inch strand assume snug-strung beads with no spacer drift. At 2mm you get roughly 200 beads, at 3mm about 135, at 4mm about 100, at 6mm about 66, at 8mm about 50, at 10mm about 40, and at 12mm about 33. Faceted cuts, rondelles, and irregular shapes (pebble, nugget, coin) vary — count is driven by the bead's drilled axis, not its widest dimension.
  • 16-inch vs 8-inch — which length for which project?
    16-inch is the necklace and design-strand length: enough material for an 18–20 inch finished necklace, multi-strand torsades, long earring drops, or component cutting. 8-inch is the bracelet length: pre-cut to the wrist standard, sized for stretch-cord bracelets and single-wrap pieces. Designers running production bracelet lines typically buy 8-inch to skip the cut-down step; designers doing necklace work, statement pieces, or mixed assemblies buy 16-inch for the bead count and pricing efficiency. Both lengths share the same stones and cuts where stocked — the choice is about finished-piece geometry, not material grade.
  • What stones and cuts does Dakota carry in 16-inch?
    The 16-inch hub spans the full catalog. Most-stocked stones include agate, turquoise, quartz, jasper, tourmaline, moonstone, garnet, labradorite, opal, and amazonite, with deeper coverage across feldspar, chalcedony, and silica varieties. Cut coverage runs from smooth round and faceted round (the largest categories) through rondelle, microfaceted round, pebble and nugget, cube, table-cut cube, faceted cube, and coin. Standard sizes are 4mm, 6mm, 8mm, and 10mm, with 2mm and 3mm in microfaceted work and 12mm in larger statement rounds. Filter by stone, cut, or size to narrow the grid.
  • How does Dakota measure 16-inch strand lengths?
    Strand length is measured end-to-end along the drilled axis, beads strung snug with no gaps. A 16-inch strand can run 15.5 to 16.5 inches depending on bead shape and how the cutter finished the temporary string — irregular shapes (nugget, pebble, raw-faceted) sit at the looser end because the drill points don't always center on the bead's midline. Bead count per strand reflects this variance.