6-7mm Stainless Steel and Hematite Silver Plated brass clasp 1mm Leather cord one size fits most Duster with every bracelet Please Note: Due to stock variety, color or shape of mixed products may vary from photo sample shown on our website. Natural gemstone or semi precious stone comes from mineral. Due to the naturality, the stones may have tiny flaw. Meanwhile, cutting or polishing also makes every piece of gemstone vary in color and size.