The silver we use is 100% guaranteed 925 sterling silver, no substitutes. Each piece is hallmarked 925. Stone Types: Larimar (Dominican Republic), Blue Topaz, Peridot & Cubic Zirconia Total Long: 18 1/4 Total Weight: 26.7 grams (including gemstone & silver) Setting Metal: 925 Solid Sterling Silver Style: - Customer Service Is Our #1 Priority! The item "17.8cts Larimar (Dominican Republic) & Cubic Zirconia 925 Silver Necklace LMRN13" is in sale since Friday, June 24, 2016.This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "xtremegems2010" and is located in CA. This item can be shipped worldwide.