Abstract:
Since the drawn of civilization man has manufactured gems, and then the demand for fine quality natural
gems have been increasing day by day. The creation of Gem in Laboratories has been a goal of
scientists and entrepreneurs for many years. Today most of them are synthesized of manufactured from
raw material so as to enable them common man to reach it due to its cheap price. The most successful
innovation of synthetic gem is cubic zirconia as American Diamond. Cutting and Polishing of these
diamonds to different sizes have a best use in jewellery.
