ZENstore Black Tourmaline Knotted Shamballa Handmade Bracelet with Certified Gemstones, L 8-9", Gift Box Used gemstones: Black Tourmaline Certified by PRIN Institute in Vienna Austria Best fit for wrist size 8 to 9 inches; Can be resized up to 13 inches Beads size 0.4 inches Other sizes also available Handmade