So with the GIA diamond certificate, you will not become a victim of buying such diamonds. There are some designers that are more well known than others in the world of costume jewelry. Even celebrities currently invest thousands of dollars on costume jewelry every year.
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Diamonds of premium cut proportions are almost as good as ideal. Most people will not be able to distinguish an idea cut from premium. Less diamond material is lost in the process of cutting thus making the diamonds less expansive then ideally cut ones. In short premium cut reflects almost as much light as the ideal-cut, but for a lower price.
Color Diamonds of F color are very close to colorless. Very small percentage of natural diamonds fall into this category. Even a trained professional will not be able to detect presence of color without instrumentation.
Clarity Inclusions and external blemishes in diamonds of SI1 clarity may be easy to spot under 10X power magnification. Location of the inclusions greatly affect their visibility to the naked eye. SI1 diamonds of good color produce as good of a sparkle as the more expansive VS graded stones of lower color. Excellent bargains may be fond in this category.