Cubic zirconia is the most used and most affordable imitation diamond. It is a completely synthetic stone, not occurring in nature. It is incorrectly called cubic zirconia.
Such zircon is naturally found in nature, but it has not a cubic but a square compound and is chemically completely different from cubic zirconia.
Beautiful, sapphire blue
Beautiful glittering facet cut, ideal wherever you need a little shine for a few crowns :-) made of suitable material