Raw Black Diamond Ring This beautiful Black Diamond Ring is handforged into a gorgeous Heart Shaped Gemstone Ring in 925 Sterling Silver wire . Carat weight for this Black Diamond Ring is approximately 1.0 ct. This Gorgeous Black Diamond gemstone has a beauty all to itself in its natural form ! A beautiful and unique stone. You don't see this unique heart design etched with raw black diamonds every day . A must if you are looking for something different for that unique engagement ring...