Specifications: Color: crystal / crystal AB Material: k9 glass Size & Quantity: 7*12mm(72pcs); 11*18mm(24pcs); 13*22mm (24pcs); 17*28mm(12pcs); Shapes: Teardrop Back: Flatback crystal sewing rhinestone. Features: 1.Rhinestone are made of crystal k9 glass, more shiny, brighter, much better than the acrylic. Faceted white gems will shine beautifully under sunshine and light, white AB rhinestones will change its colors according to the change of angles. 2.Various sizes can meet your different needs. 3.Vacuum plating. Never dull out, don't fall off, the gloss is better than any acrylic. 4.Fine cut surface, giving the sew on rhinestones crystal shiny and transparent. 5.Easy to Use: There are 2 holes on each end of the flatback rhinestones, you can sew them on or glue them to fulfill your decorations(glue is not included). 6.What can we use the rhinestones for: A Must-have Accessory for Bridals on the Wedding Use this flatback rhinestones to decorate Wedding sash belts , Wedding garter, Dance costume, Flower girl basket. A Great Addition to Gowns or Dresses It's super pretty to make the crystals an elegant addition to any dresses, including the bridal wedding gown, maid of honor dress, cocktail dress, dance dress, or homecoming dance costume, making them more eye-catching. DIY to be Great Decorations A great ornament for tiaras, headbands, headpieces, hair flowers, veils, garters, brooches,or an elegant decoration to hats, bodices, bags, shoes, fashion apparel, craft projects and the bottom of the wedding flowers. Note: they are tiny parts in small size, please keep them out of children's reach to avoid choking.