CRYSTALLIZED - Swarovski Elements flatbacks are perfect for nail designs! These beautifully cut rhinestones also works well on cell phones, cameras, clothing, greeting cards, jewelries and almost everything! Each pack comes with 1440 pieces made of leaded crystal glass. For gel nails, simply finish the entire curing process and use a bit of gel to stick on these rhinestones. We suggest you also add a bit of gel around the rhinestone and cure again to make it last.