Made in Europe by Preciosa Crystal, these Cubic Zirconia stones are a more affordable alternative to genuine diamonds. Cubic zirconia is the best synthetic stone of all diamond´s substitutes. It is an ideal raw material for the production of jewelry thanks to its hardness coming close to the hardness of ruby or sapphire, and optical properties close to those of diamond. This line of Machine Cut CZ stones combine great value with amazing precision of sizing and facetting. Not only is every facet individually polished, but each stone has size tolerance with variation of only +/- 0.01mm.