Loose Gemstones; Colored Gemstones, Simulated & Synthetic; Formica (Th) Co, Ltd Developed and Produces Nanocrystal (Nanogem) new Created Material that Completely Imitates Color and Brightness of Natural Emerald, Sapphire, Ruby, Topaz, Peridot, Citrine, Black Spinel we offer High Quality Machine Cut from our Nanocrystals (0.80 20Mm) in all Shapes and Sizes, Jewelry Industry, Jewelry Material ...