... Similar to Austrian Swarovski Crystal,Whole Sizes & Color Round Flat back Hot-Fix Rhinestones for Alexandrite makingCreate Your Own Fashion Statement ... with our Great Selection of Sizes and Colors!Brief IntroudctionFlat-Back Hot-Fix Rhinestones are backed with a special glue, ... are not Swarovski crystal , but an excellent alternative.Our Advantage Full Sizes available:SS6,SS8, S10, S12,SS16,SS20,SS30, ...