flat back rhinestones 1.largue quantity 2.factory price 3.profession export trading 4.MOQ 1 bag flat back rhinestones1. Sizes available:SS1-SS2. Colors available: 54 colors. crystal, crystal AB, siam, sapphire, green, amethyst, jonquil, topaz, rose, peach, black, hemitete, etc.3. Quality GRADE: Swarovski copy stone, DMC stone, Korea stone, Grade AA stone, Grade A stone, Grade B stone, Grade C ...