Round Faceted AAA Rated Garnet Red Cubic Zirconia Stones With Top Cut & Polish These are a man-made composition created to simulate the brilliance of a diamond. The hardness of these cubic zirconia stones is 8.5 on the Moh's scale. They're brilliantly cut, have a beautiful shine and are loupe clean. Granada, Garnet Gemstone, Garnet Gem, Red Garnet, Loose Gemstones, Garnet, Natural Gemstones, Diamond Crystal, Loose Stones