Ziamond Cubic Zirconia CZ Jewelers offers a vast selection of sizes, shapes and colors (Diamond-look, Ruby, Sapphire, Emerald, Pink and Canary Diamond-look). Ziamond utilizes only the finest of hand cut and hand polished cubic zirconia rough materials, as well as, the finest gem cutting facilities in the world. All Ziamond cubic zirconia cz jewelry is set in gold and platinum.