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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.

DZI Eye Agate 8mm Round Black Brown - 15-16 Inch

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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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DZI Eye Agate 10mm Round Brown - 15-16 Inch

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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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DZI Turtle Agate 10mm Round Green - 15-16 Inch

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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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DZI Three Eye Agate 8mm Round Red - 12-14 Inch

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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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DZI Watermelon Agate 8mm Round Brown - 15-16 Inch

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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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DZI Eye Agate 6mm Round Black Brown - 15-16 Inch

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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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DZI Turtle Agate 6mm Round Green - 15-16 Inch

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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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DZI Turtle Agate 10mm Faceted Round Brown White - 15-16 Inch

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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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DZI Agate 10x25-30mm Tiger Teeth Barrel Black - 15-16 Inch

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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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DZI Agate 10x30mm Nine Eye Barrel Red - 15-16 Inch - CLEARANCE

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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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DZI Agate 10x30mm Three Eye Barrel Dark Green - 15-16 Inch

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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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Dumortierite 8mm Double Heart Faceted A Grade - 15-16 Inch

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Dumortierite is an aluminum borosilicate mineral that varies in color from blue, green and brown to the more rare violet and pink. First described ...

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Green Angelite 8mm Double Heart Faceted - 15-16 Inch

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A natural blue form of calcium sulfate, it raises the state of conscious awareness and facilitates contact with your angels. It is mined in Peru. I...

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Hackmanite 8mm Round - 15-16 Inch

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Discovered in Greenland in the late 1890's, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem-grade hac...

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Hackmanite 6mm Round - 15-16 Inch

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Discovered in Greenland in the late 1890's, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem-grade hac...

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Violet Aqua Terra Impression Jasper 8mm Round - 15-16 Inch

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Aqua Impression Jasper has been dyed to an aqua or turquoise blue color. It contains inclusions of tan and crimson, which dramatically complement t...

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Violet Aqua Terra Impression Jasper 10mm Round - 15-16 Inch

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Aqua Impression Jasper has been dyed to an aqua or turquoise blue color. It contains inclusions of tan and crimson, which dramatically complement t...

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5 Elements Quartz 8mm Round - 15-16 Inch

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5 Elements Quartz

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Chrysocolla 8mm Energy Prism Faceted - 15-16 Inch

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Chrysocolla, a hydrous copper silicate, is often mistaken for turquoise due to its rich blues and blue to greens. It often also occurs with colors ...

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Sardonyx 8mm Energy Prism Faceted - 15-16 Inch

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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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Lapis 6mm Energy Prism Faceted A Grade - 15-16 Inch

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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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Pink Opal 3x4mm Rondelle Faceted A Grade - 15-16 Inch

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Pink Opal is a variety of non to precious opal, meaning that it has lustre and some translucency without the fire or color play associated with pre...

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Topaz 3x4mm Rondelle Faceted - 15-16 Inch

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Topaz is a rare silicate mineral and obtains much of its popularity from its beautiful colors and its status as a birthstone. Topaz occurs in a wi...

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Lepidolite 5x8mm Rondelle Faceted - 15-16 Inch

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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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Bloody Iolite 3x4mm Rondelle Faceted - 15-16 Inch

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Iolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called “pleochroism,” which means that it ca...

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Peruvian Turquoise (Chrysocolla) 5x8mm Rondelle Faceted A Grade - 15-16 Inch

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Peruvian Turquoise is also known as Turquoise Chrysocolla. It’s attractive blue-green provides a unique color to the mineral world. Peruvian Turquo...

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Pink Purple Tourmaline 3x4mm Rondell Faceted - 15-16 Inch

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Pink Tourmaline ranges in color from light pink to deep magenta, with inclusions of white to colorless translucent or transparent. Tourmaline occur...

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Jade 5x8mm Rondelle Faceted - 15-16 Inch

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Jade refers to an ornamental mineral, mostly known for its green varieties. Jade has been used for tens of thousands of years, initially as tools b...

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Blue Apatite 5x8mm Rondelle Faceted - 15-16 Inch

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Blue Apatite ranges in color from light teal to blue to bright blue to dark blue to green. It can be easily confused with other minerals due to its...

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Iolite 5x8mm Rondelle Faceted - 15-16 Inch

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Iolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called “pleochroism,” which means that it ca...

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Tanzanite 3x4mm Rondelle Faceted - 15-16 Inch

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

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Red Garnet 3x4mm Rondelle Faceted - 15-16 Inch

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Red Garnet is the most commonly known type of Garnet, which occurs in many colors. Garnet has been used for adornment and spirituality by myriad cu...

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Cacoxenite 3x4mm Rondelle Faceted - 15-16 Inch

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Cacoxenite is the trade name for this naturally occurring blend of seven stone types. It was originally named for the visible inclusions of the min...

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Bumble Bee Jasper 4mm Microfaceted Round - 15-16 Inch

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Alashan Agate 4mm Microfaceted Round - 15-16 Inch

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Amazonite 4mm Microfaceted Round A Grade - 15-16 Inch

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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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Topaz 4mm Round Faceted - 15-16 Inch

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Topaz is a rare silicate mineral and obtains much of its popularity from its beautiful colors and its status as a birthstone. Topaz occurs in a wi...

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Ruby Zoisite 4mm Microfaceted Round - 15-16 Inch

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Ruby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple...

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Australian Chrysoprase 4mm Round Faceted - 15-16 Inch

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Chrysoprase is a bright apple green, translucent stone, whose color often caused ancient jewelers to confuse it with Emerald. A cryptocrystalline C...

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Brazilian Amazonite Clear 4mm Microfaceted Round - 15-16 Inch

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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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Rhodochrosite 4mm Round Faceted - 15-16 Inch

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Rhodochrosite is a bubblegum pink to rose red stone, with occasional inclusions of creamy white and dark grey. A manganese carbonate material of th...

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Orange Garnet 4mm Microfaceted Round - 15-16 Inch

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Orange or Hessonite Garnet is sometimes called “Cinnamon Stone” for its orange to orange to brown color as well as for its origin in the land of sp...

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Blue Apatite Multi 4mm Round Faceted - 15-16 Inch

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Blue Apatite ranges in color from light teal to blue to bright blue to dark blue to green. It can be easily confused with other minerals due to its...

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Purple Garnet 4mm Microfaceted Round - 15-16 Inch

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Purple Garnet is a magenta to purple variety of the famous stone. Garnet has been used for adornment and spirituality by myriad cultures and civili...

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Emerald 4mm Round Faceted - 15-16 Inch

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Emerald is one of the four “precious” gemstones, the others being Diamond, Ruby and Sapphire. It is the green form of Beryl, colored by trace amoun...

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Rainbow Sapphire 4mm Round Faceted - 15-16 Inch

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Sapphires are precious gemstones, but unlike rubies, they come in a rainbow of colors besides red!  They are all varieties of the mineral corundum,...

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Green Apatite 4mm Round Faceted - 15-16 Inch

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Green Apatite is a transparent to translucent stone that may be green, yellow to green or sea to green in color. Apatite has been labeled the “dece...

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Cubic Zirconia (CZ) 3mm Round Light Yellow Pearl (Synthetic) - 14.5-15 Inch

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Zircon occurs in a variety of colors including yellow, green, red, reddish brown and blue hues, as well as colorless. Colorless Zircon of the highe...

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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. Exact count should be disclosed; ask before buying if a piece-count is critical for your design and isn't specified.
  • 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. Length and approximate count should be disclosed; if you need a tight tolerance for a calibrated production run, ask before buying so the team can pull and measure before shipping.