Sterling Silver Baltic Amber Mosaic Medallion EarringsMaterial: Genuine Sterling Silver (925 silver, 92. 5% silver content) Stone(s): Genuine Baltic amber Overall Dimension of Each (including hooks): 0. 8 x 0. 8 x 0. 2 inches Back Type: Stud Weight: 3 grams Stamp Mark: N A Origin: Poland Serial Number: e24108 Amber, an organic gemstone, is the fossilized sap of prehistoric trees which grew up to 50 million years ago. The stone has been used for jewelry since the time of Christ. The world's finest amber