Platinum Rings for Men Platinum ring with major hi-polish & slight matte finish with a single diamond. Metal : Platinum Platinum Purity : 95% Purity Mark : Pt 950 Gemstone : Natural Diamond Diamond carats : 0.15 cts. Estimated Platinum Weight : 6.40 grams Diamond Clarity : SI Diamond Color : IJ Finishing : Hi-polish with the center as matte finish Certificate of Authenticity : Platinum Guild International, SGL Platinum Rings For Men, Platinum Rings, Platinum Diamond Rings, Ring For Men, Platinum Ring, Diamond Color, Diamond Clarity, Colored Diamonds, Natural Diamonds