Himerus Lady White Gold Plated Square Cut Created Shining Blue-Sapphire Ring Our Shining Blue-Sapphire Ring is made of high-quality stainless steel. Plated by sterling silver and decorated by glitter AAA rhinestone. The elaborate Square Cut Large Blue-Sapphire will make you the most shining star inte party, prom, wedding and so on. We offer three US sizes: 7(Diameter:17.3mm), 8(Diameter:18.1mm), 7(Diameter:19.0mm).