Adjustable Fits size 17 to 21. 8mm beads Bloodstone,  Aventurine, Sodalite, Rose Quartz, Flourite,  Tiger Eye, Jasper,  Amazonite,  Malachite,  Rhodocrosite,  Onyx,  Picaso, Citrine, Serpentine, Azurite, Turquoise, Lapis Lazuli, Black Tourmaline tourmaline, Black Spinal,  Pink Zebra and Amethyst.  Please e mail me for wholesale prices(5 or more) price depends on qty from R140