The mark STAR is a guarantee of quality for each cubic zirconia stone by Preciosa.

Cubic zirconia, also known as CZ, was created as a more affordable alternative to genuine diamonds. Cubic zirconia is the best synthetic stone of all diamond´s substitutes. It comes in every imaginable colour and at a fraction of the cost of other gemstones. Zirconia 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.

The cubic zirconia stones are available in following colors and shapes: