Skip to content

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.

Ruby and Sapphire 4mm Round Faceted A Grade Banded - 15-16 Inch

Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. It is also one of the hardest, second only to Diamond...

View full details
Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Ruby Faceted 8mm Round - 15-16 Inch

Original price $91.00 - Original price $91.00
Original price $91.00
$91.00 - $91.00
Current price $91.00
Login for wholesale

Ruby is a precious gemstone known for its deep red color. It is a variety of the mineral corundum, the second-hardest mineral next to diamond . The...

View full details
Original price $91.00 - Original price $91.00
Original price $91.00
$91.00 - $91.00
Current price $91.00
Login for wholesale

Ruby Fuchsite Faceted 3mm Round - 15-16 Inch

Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
Login for wholesale

Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. It is also one of the hardest, second only to Diamond...

View full details
Original price $14.00 - Original price $14.00
Original price $14.00
$14.00 - $14.00
Current price $14.00
Login for wholesale

Ruby Pink Purple Natural 6mm Faceted Round Banded - 15-16 Inch

Original price $53.00 - Original price $53.00
Original price $53.00
$53.00 - $53.00
Current price $53.00
Login for wholesale

Ruby is a precious gemstone known for its deep red color. It is a variety of the mineral corundum, the second-hardest mineral next to diamond . The...

View full details
Original price $53.00 - Original price $53.00
Original price $53.00
$53.00 - $53.00
Current price $53.00
Login for wholesale

Ruby Sapphire Faceted 2mm Round - A - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Sapphire 6mm Faceted Round 15-16 Inch

Original price $49.00 - Original price $49.00
Original price $49.00
$49.00 - $49.00
Current price $49.00
Login for wholesale

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

View full details
Original price $49.00 - Original price $49.00
Original price $49.00
$49.00 - $49.00
Current price $49.00
Login for wholesale

Sapphire Faceted Hexagon & Hex tubes 15-16 Inch

Original price $126.00 - Original price $126.00
Original price $126.00
$126.00 - $126.00
Current price $126.00
Login for wholesale

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

View full details
Original price $126.00 - Original price $126.00
Original price $126.00
$126.00 - $126.00
Current price $126.00
Login for wholesale

3mm Sapphire Faceted Round A Grade - 15-16 Inch

Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
Login for wholesale

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

View full details
Original price $31.00 - Original price $31.00
Original price $31.00
$31.00 - $31.00
Current price $31.00
Login for wholesale

Sapphire Flower Natural 3mm Faceted Round Banded - 15-16 Inch

Original price $25.00 - Original price $25.00
Original price $25.00
$25.00 - $25.00
Current price $25.00
Login for wholesale

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

View full details
Original price $25.00 - Original price $25.00
Original price $25.00
$25.00 - $25.00
Current price $25.00
Login for wholesale

Seraphinite 2mm Round Faceted A Grade - 15-16 Inch

Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

Seraphinite's chatoyancy (optical reflectance) gives it a feathery appearance associated with angels (also known as seraphim.) Seraphinite is most ...

View full details
Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

Seraphinite 3mm Round Faceted 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
Login for wholesale

Seraphinite's chatoyancy (optical reflectance) gives it a feathery appearance associated with angels (also known as seraphim.) Seraphinite is most ...

View full details
Original price $24.00 - Original price $24.00
Original price $24.00
$24.00 - $24.00
Current price $24.00
Login for wholesale

Shungite 10mm Faceted Nugget 15-16 Inch

Original price $38.00 - Original price $38.00
Original price $38.00
$38.00 - $38.00
Current price $38.00
Login for wholesale

Shungite is a black, lustrous, non-crystalline mineraloid consisting of a high percentage of carbon. It was first found in a deposit near Shunga vi...

View full details
Original price $38.00 - Original price $38.00
Original price $38.00
$38.00 - $38.00
Current price $38.00
Login for wholesale

Shungite 8mm Faceted Round - 15-16 Inch

Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Shungite is a black, lustrous, non-crystalline mineraloid consisting of a high percentage of carbon. It was first found in a deposit near Shunga vi...

View full details
Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Sodalite 10mm Faceted Round - 15-16 Inch

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

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...

View full details
Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

Sodalite 4mm Faceted Round - 15-16 Inch

Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

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...

View full details
Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

Sodalite 8mm Faceted Round - 15-16 Inch

Original price $21.00 - Original price $21.00
Original price $21.00
$21.00 - $21.00
Current price $21.00
Login for wholesale

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...

View full details
Original price $21.00 - Original price $21.00
Original price $21.00
$21.00 - $21.00
Current price $21.00
Login for wholesale

Strawberry Quartz 8x10mm Oval Faceted, Free Form - 15-16 Inch

Original price $32.00 - Original price $32.00
Original price $32.00
$32.00 - $32.00
Current price $32.00
Login for wholesale

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 $32.00 - Original price $32.00
Original price $32.00
$32.00 - $32.00
Current price $32.00
Login for wholesale

Strawberry Quartz Faceted Banded 3mm Round - 15-16 inch

Original price $16.00 - Original price $16.00
Original price $16.00
$16.00 - $16.00
Current price $16.00
Login for wholesale

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 $16.00 - Original price $16.00
Original price $16.00
$16.00 - $16.00
Current price $16.00
Login for wholesale

Sunset Dumortierite 10mm Faceted Round - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Sunset Dumortierite has a much brighter palette than regular Dumortierite, from light blue to lapis blue to cobalt, as well as some occurrences of ...

View full details
Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Sunstone 2x3mm Faceted Rondelle - 15-16 Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

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 $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

Sunstone Faceted 4mm Round - 15-16 Inch

Original price $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
Login for wholesale

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 $20.00 - Original price $20.00
Original price $20.00
$20.00 - $20.00
Current price $20.00
Login for wholesale

Tanzanite 3mm Banded Microfaceted Round AA Grade - 15-16 Inch

Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

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

Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Tanzanite Faceted 3mm Round - 15-16 Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

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

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

Tanzanite Faceted, Yellow & Grey Banded 3mm Round - 15-16 Inch

Original price $42.00 - Original price $42.00
Original price $42.00
$42.00 - $42.00
Current price $42.00
Login for wholesale

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

Original price $42.00 - Original price $42.00
Original price $42.00
$42.00 - $42.00
Current price $42.00
Login for wholesale

Tektite Natural 8mm Round Faceted - 15-16 Inch

Original price $165.00 - Original price $165.00
Original price $165.00
$165.00 - $165.00
Current price $165.00
Login for wholesale

Tektite is a natural glass formed by meteorite collisions with Earth. When moving through the Earth’s atmosphere, a meteorite builds up heat that i...

View full details
Original price $165.00 - Original price $165.00
Original price $165.00
$165.00 - $165.00
Current price $165.00
Login for wholesale

Terahertz 10mm Lantern Faceted - 15-16 Inch

Original price $43.00 - Original price $43.00
Original price $43.00
$43.00 - $43.00
Current price $43.00
Login for wholesale

Terahertz is a spectacular man made ore. It shines and sparkles like a diamond making it an exceptional addition to any jewelry piece. It has treme...

View full details
Original price $43.00 - Original price $43.00
Original price $43.00
$43.00 - $43.00
Current price $43.00
Login for wholesale

Terahertz 10mm Round Triangle-Faceted - 15-16 Inch - CLEARANCE

Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Terahertz is a spectacular man made ore. It shines and sparkles like a diamond making it an exceptional addition to any jewelry piece. It has treme...

View full details
Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Terahertz 4x6mm Rice Faceted - 15-16 Inch

Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Terahertz is a spectacular man made ore. It shines and sparkles like a diamond making it an exceptional addition to any jewelry piece. It has treme...

View full details
Original price $34.00 - Original price $34.00
Original price $34.00
$34.00 - $34.00
Current price $34.00
Login for wholesale

Terahertz 4x6mm Rondelle Faceted - 15-16 Inch - CLEARANCE

Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Terahertz is a spectacular man made ore. It shines and sparkles like a diamond making it an exceptional addition to any jewelry piece. It has treme...

View full details
Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Terahertz 6mm Lantern Faceted - 15-16 Inch

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
Login for wholesale

Terahertz is a spectacular man made ore. It shines and sparkles like a diamond making it an exceptional addition to any jewelry piece. It has treme...

View full details
Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
Login for wholesale

Tiger Eye 4mm Faceted Coin 15-16 Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

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 $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

Topaz 5mm Faceted Round A Grade - 15-16 Inch

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
Login for wholesale

Original price $33.00 - Original price $33.00
Original price $33.00
$33.00 - $33.00
Current price $33.00
Login for wholesale

Topaz Dendritic 3mm Faceted Round A Grade - 15-16 Inch

Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

Original price $17.00 - Original price $17.00
Original price $17.00
$17.00 - $17.00
Current price $17.00
Login for wholesale

Topaz Dendritic 4mm Faceted Coin A Grade - 15-16 Inch

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

Topaz Dendritic 4mm Round Faceted - 15-16 Inch

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

Original price $23.00 - Original price $23.00
Original price $23.00
$23.00 - $23.00
Current price $23.00
Login for wholesale

Topaz Dendritic 5mm Round Faceted - 15-16 Inch

Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
Login for wholesale

Original price $29.00 - Original price $29.00
Original price $29.00
$29.00 - $29.00
Current price $29.00
Login for wholesale

Topaz Faceted 4x6mm Rondelle A Grade - 15-16 Inch

Original price $49.00 - Original price $49.00
Original price $49.00
$49.00 - $49.00
Current price $49.00
Login for wholesale

Original price $49.00 - Original price $49.00
Original price $49.00
$49.00 - $49.00
Current price $49.00
Login for wholesale

Variscite Faceted 2x3mm Rondelle - 15-16 Inch

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Original price $22.00 - Original price $22.00
Original price $22.00
$22.00 - $22.00
Current price $22.00
Login for wholesale

Variscite Faceted 3mm Round - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
Login for wholesale

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
Login for wholesale

Yellow Opal 12-16mm Irregular Faceted Coin A Grade - 15-16 Inch

Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Yellow Opal is transparent to opaque, milky white to pale yellow in color. It sometimes features dark brown to black dendritic inclusions that bran...

View full details
Original price $39.00 - Original price $39.00
Original price $39.00
$39.00 - $39.00
Current price $39.00
Login for wholesale

Yellow Opal Faceted AA-Grade Banded 4mm Round - 15-16 Inch

Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

Yellow Opal is transparent to opaque, milky white to pale yellow in color. It sometimes features dark brown to black dendritic inclusions that bran...

View full details
Original price $19.00 - Original price $19.00
Original price $19.00
$19.00 - $19.00
Current price $19.00
Login for wholesale

Yellow Tourmaline 3mm Faceted Round A Grade - 15-16 Inch

Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
Login for wholesale

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...

View full details
Original price $18.00 - Original price $18.00
Original price $18.00
$18.00 - $18.00
Current price $18.00
Login for wholesale

Cubic Zirconia (CZ) Carnelian 2x3mm Rondelle Faceted - 15-16 Inch

Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia (CZ) Carnelian 3mm Round Faceted - 15-16 Inch

Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

Cubic Zirconia (CZ) Green 2x3mm Rondelle Faceted - 15-16 Inch

Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia (CZ) Green 3mm Round Faceted - 15-16 Inch

Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

Cubic Zirconia (CZ) Lavender 2x3mm Rondelle Faceted - 15-16 Inch

Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $11.00 - Original price $11.00
Original price $11.00
$11.00 - $11.00
Current price $11.00
Login for wholesale

Cubic Zirconia (CZ) Lavender 3mm Round Faceted - 15-16 Inch

Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

Cubic Zirconia, abbreviated as CZ, is a lab-made form of zirconium dioxide. Made to resemble Diamonds, these stones offer the same beauty and spark...

View full details
Original price $10.00 - Original price $10.00
Original price $10.00
$10.00 - $10.00
Current price $10.00
Login for wholesale

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.