Tanzanite is a cool, medium-dark purple with blue undertones that give it the distinctive violet-blue quality of the gemstone it is named after. The color sits between purple and blue, reading as a rich, sophisticated violet that shifts slightly depending on the light. Foil backing adds depth and a clean flash behind each facet, keeping the sparkle vivid and refined. This is a beautiful option for cool-toned palettes, evening-themed builds, and projects that call for a purple with depth and class. It pairs well with sapphire, light amethyst, crystal labrador, and jet black for elegant, jewel-toned combinations. Use it on tumblers, shoes, dance costumes, phone cases, and custom apparel. KiraKira Glass Rhinestones by CrystalNinja are premium foiled flatback glass rhinestones engineered for clean placement, strong sparkle, and reliable results. Most colors ship in an approximate 10 gross pack (about 1,440 stones). ss30 packs ship in an approximate 2 gross pack (about 288 stones). These rhinestones are ideal for apparel, shoes, tumblers, canvases, accessories, and custom builds. All flatback rhinestones require adhesive for application. Visit our glue collection for the best adhesive options for your project. Available in sizes ss3 through ss30. MixedPack option available for size variety in one pack.