DeKara Designs Collection Metal- 18K Yellow Gold, .750. Stones- 1 Oval Red Ruby 0.52 Carats, 10 Round Diamonds G-H Color VS2 Clarity 0.40 Carats. Art Deco 18K Yellow Gold Ruby Diamond Engagement Ring. This ring features a beautiful red oval ruby that is professionally prong set set. The ruby is surrounded by 10 round dazzling diamonds that are all prong set as well. They yellow gold color is very rich and looks amazing. This is a one of a kind ring! Size-5 1/2. FREE SIZING FREE SHIPPING 7 Day Return Policy, starting on the day you receive the ring. Customer pays for the shipping back.