Handcrafted in .950 Sterling Silver by Artisans Fossils will vary in Color, Shape and Size Amber: 25-30mm x 16-20mm. Trilobite: 28-35mm x 19-25mm Ammonite: 29-37mm x 23-30mm Shark Tooth: 35-40mm x 25-28mm Fossil Coral: 20-30mm x 18-22mm Fits Wrist Sizes: Smaller Fossils: 6.75" - 7.75" Larger Fossils: 7" - 8" All pieces are stamped or hallmarked for authenticity Casual day and evening wear Metaphysical Properties: Promotes strong bone growth