Ziamond cubic zirconia cz jewelry is set with the finest lab created man made gems available today and comes with a Lifetime Guarantee. All Ziamond cubic zirconia cz stones are cut to exact diamond standards, assuring the true look and brilliance of a genuine diamond. We offer a variety of engagement rings, wedding bands, earrings, bracelets, necklaces and pendants mounted in 14k gold, 18k gold or platinum.