Bead size: 4mm Strand length: approximately 15.5" Price is per strand. Guaranteed genuine 100% natural tourmaline not treated in any way... Thanks to advanced laser technology, these coin beads are nicely laser faceted to achieve the dazzling diamond look! We usually ship every day from Mon-Sat (except postal office holidays) and will do our best to ship on the same day when payment is received. Number of beads per 15.5" strand We sell our products by the strand, not by the number of beads. The following chart is for reference only. It's for traditional round-shaped beads strung continuously without spacer beads or knots in between. 2mm in diameter- about 195pcs/strand 3mm in diameter- about 130pcs/strand 4mm in diameter- about 96pcs/strand 6mm in diameter- about 68pcs/strand 8mm in diameter- about 48pcs/strand 10mm in diameter- about 38pcs/strand 12mm in diameter- about 33pcs/strand 14mm in diameter-about 28pcs/strand 16mm in diameter-about 25pcs/strand 18mm in diameter-about 22pcs/strand 20mm in diameter-about 20pcs/strand Note: -Bead sizes are approximate and may have a variation of +/- 0.5mm. -Drill hole sizes are approximate and may have a variation of +/- 0.2mm. -All natural gemstones vary in color and pattern. We try our best to make our photos represent the real products in person.