Sterling Silver, Baltic Amber, and Ebony Wood Mosaic Stud EarringsMaterial: Genuine Sterling Silver (925 silver, 92. 5% silver content) Stone(s): Genuine Baltic amber pieces in mosaic design and genuine ebony wood Overall Dimension of Each (including hooks): 2 x 1. 4 x 0. 25 inches Back Type: Stud Weight: 12. 3 grams Stamp Mark: N A Origin: Poland Serial Number: e24327 Amber, an organic gemstone, is the fossilized resin of prehistoric trees which grew up to 50 million years ago. The stone has been used for jewelry