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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.

Golden Obsidian 6mm 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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Golden Obsidian is a naturally occurring volcanic glass, shiny black with a golden sheen. Obsidian is produced when lava erupts from a volcano and ...

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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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Golden Obsidian 8mm Round - 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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Golden Obsidian is a naturally occurring volcanic glass, shiny black with a golden sheen. Obsidian is produced when lava erupts from a volcano and ...

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Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
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Black Web Jasper 4mm Round - 15-16 Inch

Original price $6.00 - Original price $6.00
Original price $6.00
$6.00 - $6.00
Current price $6.00
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Jasper has a long and illustrious history, having been worn by shamans, priests and kings and believed to be a powerful protection stone. Ancient E...

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Original price $6.00 - Original price $6.00
Original price $6.00
$6.00 - $6.00
Current price $6.00
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Black Web Jasper 10mm Round - 15-16 Inch

Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
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Jasper has a long and illustrious history, having been worn by shamans, priests and kings and believed to be a powerful protection stone. Ancient E...

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Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
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Black Web Jasper 8mm Round - 15-16 Inch

Original price $8.00 - Original price $8.00
Original price $8.00
$8.00 - $8.00
Current price $8.00
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Jasper has a long and illustrious history, having been worn by shamans, priests and kings and believed to be a powerful protection stone. Ancient E...

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Original price $8.00 - Original price $8.00
Original price $8.00
$8.00 - $8.00
Current price $8.00
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Black Web Jasper 6mm Round - 15-16 Inch

Original price $7.00 - Original price $7.00
Original price $7.00
$7.00 - $7.00
Current price $7.00
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Jasper has a long and illustrious history, having been worn by shamans, priests and kings and believed to be a powerful protection stone. Ancient E...

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Original price $7.00 - Original price $7.00
Original price $7.00
$7.00 - $7.00
Current price $7.00
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Black Mother of Pearl 10mm Round Mosaic - 15-16 Inch

Original price $100.00 - Original price $100.00
Original price $100.00
$100.00 - $100.00
Current price $100.00
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Mother of Pearl, also known as Nacre, is an iridescent composite of organic and inorganic material most known for being the coating of pearls. It i...

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Original price $100.00 - Original price $100.00
Original price $100.00
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Current price $100.00
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Black Mica 10mm Round A Grade - 15-16 Inch

Original price $36.00 - Original price $36.00
Original price $36.00
$36.00 - $36.00
Current price $36.00
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Mica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet sil...

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Original price $36.00 - Original price $36.00
Original price $36.00
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Current price $36.00
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Black Mica 8mm Round A Grade - 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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Mica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet sil...

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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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Hypersthene 5x10-20mm Top Drill Teeth - 15-16 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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Hypersthene is often categorized as enstatite or ferrosilite, but its identity is complicated. Pure enstatite contains no iron, and pure ferrosilit...

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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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Black Spinel 4x6mm Irregular Rondelle Faceted - 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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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 $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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DZI Agate 10x25mm Barrel Black Tiger Teeth - 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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“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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Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
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DZI Agate 8x12mm Barrel Black Eye - 15-16 Inch

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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Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
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Sardonyx 8mm Energy Prism Faceted - 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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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 $24.00 - Original price $24.00
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Current price $24.00
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Black Opal 4mm Round Faceted - 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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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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Original price $44.00 - Original price $44.00
Original price $44.00
$44.00 - $44.00
Current price $44.00
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Mother of Pearl 10mm Puff Star Black - 15-16 Inch

Original price $76.00 - Original price $76.00
Original price $76.00
$76.00 - $76.00
Current price $76.00
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Mother of Pearl, also known as Nacre, is an iridescent composite of organic and inorganic material most known for being the coating of pearls. It i...

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Original price $76.00 - Original price $76.00
Original price $76.00
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Current price $76.00
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Ethiopian Opal 5-6mm Pebble Black - 15-16 Inch

Original price $168.00 - Original price $168.00
Original price $168.00
$168.00 - $168.00
Current price $168.00
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Ethiopian Opal was first discovered in Ethiopia in 1994, with additional major finds in 2008 and 2013. Beautiful specimens of Precious Opal, Fire O...

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Original price $168.00 - Original price $168.00
Original price $168.00
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Current price $168.00
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Ethiopian Opal 4-9mm Heart Black - 15-16 Inch

Original price $210.00 - Original price $210.00
Original price $210.00
$210.00 - $210.00
Current price $210.00
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Ethiopian Opal was first discovered in Ethiopia in 1994, with additional major finds in 2008 and 2013. Beautiful specimens of Precious Opal, Fire O...

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Original price $210.00 - Original price $210.00
Original price $210.00
$210.00 - $210.00
Current price $210.00
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Ethiopian Opal 4x9-12mm Pear Black - 15-16 Inch

Original price $210.00 - Original price $210.00
Original price $210.00
$210.00 - $210.00
Current price $210.00
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Ethiopian Opal was first discovered in Ethiopia in 1994, with additional major finds in 2008 and 2013. Beautiful specimens of Precious Opal, Fire O...

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Original price $210.00 - Original price $210.00
Original price $210.00
$210.00 - $210.00
Current price $210.00
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Black Spinel 5mm Round - 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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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 $15.00 - Original price $15.00
Original price $15.00
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Current price $15.00
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Black Spinel 10mm Faceted Hexagon - 15-16 Inch

Original price $105.00 - Original price $105.00
Original price $105.00
$105.00 - $105.00
Current price $105.00
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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 $105.00 - Original price $105.00
Original price $105.00
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Current price $105.00
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Sardonyx 8mm Star Cut Coin - 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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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
$18.00 - $18.00
Current price $18.00
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Black Spinel 4x8mm Faceted Rondelle - 15-16 Inch

Original price $121.00 - Original price $121.00
Original price $121.00
$121.00 - $121.00
Current price $121.00
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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 $121.00 - Original price $121.00
Original price $121.00
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Current price $121.00
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Black Moonstone 6-8mm Irregular Cube - 15-16 Inch

Original price $20.00 - Original price $20.00
Original price $20.00
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Current price $20.00
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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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Original price $20.00 - Original price $20.00
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Current price $20.00
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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.