Check the listing for details. Black Onyx Smooth Round Beads 4mm 6mm 8mm 10mm 12mm 14-20mm 15.5" Strand. Color: Black, Condition: New. Listed at 6.99 USD. Material: Black Onyx Agate Shape: Smooth Polished Round Color: Black Size: 4mm - Approx 98 Beads Per Strand 6mm - Approx 64 Beads Per Strand 8mm - Approx 48 Beads Per Strand 10mm - Approx 38 Beads Per Strand 12mm - Approx 32 Beads Per Strand 14mm - Approx 28 Beads Per Strand 16mm - Approx 25 Beads Per Strand 18mm - Approx 22 Beads Per Strand 20mm - Approx 20 Beads Per Strand Hole Size: Approx 1.0mm The Black Onyx Mined in Brazil Note: -Gemstone bead sizes are approximate and may have a +/- 0.5mm difference. -Gemstone bead drill hole sizes are approximate and may have a +/- 0.2mm difference. Spend More! Save More! 10% Off When You Spend Over $50 15% Off When You Spend Over $100 20% Off When You Spend Over $200 stone loose polished strand beads precious gemstone jewerly making