ZENstore Tiger Eye and Black Tourmaline Knotted Shamballa Handmade Bracelet with Certified Gemstones, M 7-8", Gift Box Used gemstones: Black Tourmaline Certified by PRIN Institute in Vienna Austria, Tiger Eye Best fit for wrist size 7 to 8 inches; Can be resized up to 12 inches Beads size 0.4 inches Other sizes also available Handmade