... back Hot-Fix Rhinestones for Alexandrite making,Similar to Austrian Swarovski Crystal,Whole Sizes & Color Round Flat back Hot-Fix ... Crystal, clear, diamond-like* Genuine Crystal: Amethyst, SS 6 to SS 34, Multi-faceted Cut, Silver Foil Backed, Flatback Rhinestones ... not Swarovski crystal , but an excellent alternative.Our Advantage Full Sizes available:SS6,SS8, S10, S12,SS16,SS20,SS30,SS34Whole ...