Round Simulated Black Onyx Two Tone Double Cable Sterling Silver Ring Cable Ring Stone: 8mm W Material: .925 Sterling Silver, Gold Plating, Cubic Zirconia Measure: 3mm Band Width Weight: 6 grams If you&#039;re looking for a unique ring, get this 3mm sterling silver and gold plated double shank piece. It boasts a simulated black onyx cz and stunning clear cz halo against a captivating twisting patter. Stone: 8mm W Measure: Width: 3mm, Weight: 6 Grams, Material: .925 Sterling Silver, Gold Plating, Cubic Zirconia