Sterling Silver Lab Created Ruby & Lab Created White Sapphire Necklace Oval Cut Lab Created Ruby & White Lab Created Sapphire Necklace Oval genuine lab grown ruby necklace with one round diamond simulant, 3 Lab Grown Ruby 925 Sterling Silver Wedding Jewelry Women's Fashion Oval. Pieces: 1 piece Material: 18K rose gold plated, 925 sterling silver Care instructions: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide, which causes the jewelry to deteriorate and corrode over time. Imported Product Measurements (Measurements by inches) & Size Conversion Size Chain length Extension chain length One Size 16. 5 1. 2