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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.

Black Moonstone 5-6mm Irregular Cube - 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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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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Current price $12.00
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DZI Agate 15x30mm Barrel Black Vase - 13-15 Inch - CLEARANCE

Original price $20.00 - Original price $20.00
Original price $20.00
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Current price $20.00
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“DZI” Agate is made to resemble beads first found in India between 1000 and 2000 BCE. These reproductions are designed in the traditional color, pa...

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Current price $20.00
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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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Current price $24.00
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Hematite Black Plated 2x6mm Hexagon - 15-16 Inch

Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
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Hematite is an iron oxide and one of the few gemstones with a metallic luster. When tumbled it can have the look of polished steel. Hematite is bla...

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Original price $11.00 - Original price $11.00
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$11.00 - $11.00
Current price $11.00
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Black Obsidian 2x4mm Heishi - 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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Essentially a volcanic glass, Obsidian ranges in color from opaque black, to green, brown, mahogany, black with rainbow colors, black with snowflak...

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Black Silver Leaf Jasper 12mm Round - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
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Current price $32.00
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Black Silverleaf Jasper is a rare form of Jasper, characterized by its color range of black, gray and white and its swirling, leafy patterns. It is...

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Black Obsidian 8mm Round - 15-16 Inch

Original price $10.00 - Original price $10.00
Original price $10.00
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Current price $10.00
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Original price $10.00 - Original price $10.00
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Black Obsidian 4mm Round - 15-16 Inch

Original price $9.00 - Original price $9.00
Original price $9.00
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Current price $9.00
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Original price $9.00 - Original price $9.00
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Current price $9.00
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Black Obsidian 10mm Round - 15-16 Inch

Original price $14.00 - Original price $14.00
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Original price $14.00 - Original price $14.00
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Current price $14.00
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Black Lepidolite 8mm Round - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
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Current price $22.00
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A particularly soft stone, Lepidolite has a glassy or lustrous sheen. It is the most abundant lithium-bearing mineral as well as a significant sour...

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Black Lepidolite 6mm Round - 15-16 Inch

Original price $18.00 - Original price $18.00
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Current price $18.00
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A particularly soft stone, Lepidolite has a glassy or lustrous sheen. It is the most abundant lithium-bearing mineral as well as a significant sour...

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Original price $18.00 - Original price $18.00
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Black Lepidolite 10mm Round - 15-16 Inch

Original price $27.00 - Original price $27.00
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Current price $27.00
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A particularly soft stone, Lepidolite has a glassy or lustrous sheen. It is the most abundant lithium-bearing mineral as well as a significant sour...

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Original price $27.00 - Original price $27.00
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Current price $27.00
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Indigo Gabbro 6mm Round - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
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Current price $18.00
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Indigo gabbro is a color variant of the igneous mineral, gabbro. Typically, this color forms black, but occasionally gabbro comes in oranges and gr...

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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
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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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Black Tourmaline 6mm Round A Grade - 15-16 Inch

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

Original price $22.00 - Original price $22.00
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Current price $22.00
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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 $22.00 - Original price $22.00
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Sardonyx 6mm Hexagon - 15-16 Inch

Original price $33.00 - Original price $33.00
Original price $33.00
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Current price $33.00
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Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of ...

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Black Opal 7x9-8x10mm Pebble - 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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Black Opal is a naturally occurring variety of precious opal mined in Australia. this opal variety is characterized by their dark base tone. It is ...

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Sardonyx 7x8mm Faceted Round Nugget - 15-16 Inch

Original price $18.00 - Original price $18.00
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Current price $18.00
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Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of ...

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Original price $18.00 - Original price $18.00
Original price $18.00
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Current price $18.00
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Black Tourmaline 5x10-20mm Top Drill Teeth - 15-16-Inch

Original price $15.00 - Original price $15.00
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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
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Black Rutilated Quartz 4mm Micofaceted Round - 15-16 Inch

Original price $12.00 - Original price $12.00
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Current price $12.00
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Rutilated Quartz is a silicon dioxide mineral with unique needle-like inclusions of Rutile. These “needles” usually appear golden, but can also app...

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Silver Obsidian 4mm Microfaceted Round - 15-16 Inch

Original price $10.00 - Original price $10.00
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Current price $10.00
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Essentially a volcanic glass, Obsidian ranges in color from opaque black, to green, brown, mahogany, black with rainbow colors, black with snowflak...

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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
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Current price $27.00
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Black Rutilated Quartz 7x8mm Faceted Swirl Oval - 15-16 Inch

Original price $23.00 - Original price $23.00
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Current price $23.00
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Rutilated Quartz is a silicon dioxide mineral with unique needle-like inclusions of Rutile. These “needles” usually appear golden, but can also app...

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Original price $23.00 - Original price $23.00
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Current price $23.00
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FAQ

Are all Dakota Stones gemstone beads genuine?

Yes, all of our gemstone beads are made from authentic, natural materials. Any treatments (such as stabilization or dyeing) are clearly noted.

Are gemstone beads durable for everyday jewelry?

Most stones are durable, but hardness varies. Softer stones (below 6 on the Mohs scale) are best for necklaces or earrings rather than rings or bracelets.

How are Dakota Stones ethically sourced?

We are an ethical business that focuses on responsibly sourced rather than making absolute claims. There is no universal or enforceable certification system for ethically sourced gemstone rough used in beads.

Our sourcing decisions are guided by:

  • Long-standing relationships with trusted partners
  • Clear expectations for labor and working conditions
  • Ongoing evaluation of suppliers and materials
  • Transparency about what is—and isn’t—documented in the industry
Where are your gemstones manufactured?

Most of our gemstone beads are manufactured in China and India, with select turquoise products sourced and produced in the United States.

Our primary manufacturing partner in China is a long-standing, multigenerational relationship that dates back to 2003. In India, we work primarily with smaller, family-based operations and purchase ready stock rather than commissioning production.

Do you work directly with miners?

When possible, yes. In many cases, however, direct sourcing from miners is not feasible due to cost, logistics, or material availability—especially for lower-value stones like jaspers and agates.

Instead, we often work with trusted intermediaries who have established relationships within the mining and cutting communities. This is common and unavoidable in the natural stone industry.

Why don’t you list mine-by-mine origins for every stone?

That level of documentation often does not exist—or cannot be verified reliably—for gemstone beads.

Natural stones frequently pass through multiple hands between mining, cutting, and stringing. Rather than offering incomplete or misleading origin claims, we choose to be honest about what we know and transparent about industry limitations.

Have labor conditions improved in your supply chain over time?

Yes. Over the past two decades, labor standards, worker protections, and compensation—particularly in China—have improved significantly as policies shifted toward building a middle class and formalizing manufacturing standards.

These changes have increased costs, but they also reflect progress in worker welfare. We view that as a positive development and adjust our sourcing accordingly.