using samples to check for gemstone quality When shopping for wholesale cubic zirconia or synthetic gemstones, be sure to only buy top quality stones. Ask for samples to check for quality in the following areas: cut, smoothness, hardness (cubic zirconia ranking 8.5 on Moh's Scale of Hardness), and weight. Find a reputable gemologist to help if you're not sure how to check [...]... 01-17-2010 Tags cubic zirconia, gemologist, quality stones
