Flat back rhinestones: come with 1728 pieces aurora boreale nail art rhinestones in 6 sizes, enough for you different needs 6 Assorted sizes: they are 1.6 mm, 1.8 mm, 2 mm, 2.4 mm, 2.8 mm, 3 mm, the number of 2 mm gem stone is about 560 pieces, and the others are about 288 pieces for each size Material: the round shape crystal rhinestones are made of glass, multi-facetted sides and sparkling, look very shining and beautiful, they will add glamour to your life Good for DIY lovers: these rhinestones can be applied in a number of projects, such as nail art, dress making, jewelry making, embellishing clothes, costumes, bags, shoes, cards, wedding dresses, etc. Note: these crystals rhinestones are not self-adhesive, not hot-fix glass stones, you need to apply glue to stick them (glue is not included)Note: these crystals rhinestones are not self-adhesive, not hot-fix glass stones, you need to apply glue to stick them (glue is not included). Good for DIY lovers: these rhinestones can be applied in a number of projects, such as nail art, dress making, jewelry making, embellishing clothes, costumes, bags, shoes, cards, wedding dresses, etc. Material: the round shape crystal rhinestones are made of glass, multi-facetted sides and sparkling, look very shining and beautiful, they will add glamour to your life. 6 Assorted sizes: they are 1.6 mm, 1.8 mm, 2 mm, 2.4 mm, 2.8 mm, 3 mm, the number of 2 mm gem stone is about 560 pieces, and the others are about 288 pieces for each size. Flat back rhinestones: come with 1728 pieces aurora boreale nail art rhinestones in 6 sizes, enough for you different needs.