Thread 39cm - Stone Beads Lot Mix Amethyst Quartz Tiger Agate Natural semi-precious stones Multicolored, agate, amethyst, aventurine, quartz crystal, tiger eye and hawk, etc. Shape rolled pebbles Dimensions Length 8-12mm x Thickness 7-9mm approximately Drilling dimension Approx. 1mm Sold by 39cm strand Around 53 beads per strand