100% New And High Quality 3D Nail Art Charms Assorted Colors in Each Pack Material: Resin,Jelly Package Included: 7 Girds Mixed Set Nail Rhinestone How to Apply: -Use A hand file or electronic file to gently file the back of the gem so there is a rough surface. -Wipe the nail off with an alcohol wipe to clean off any oils or products. -Use a small bead of acrylic and place it on the back of the charm and then gently apply pressure to the nail while holding the charm in place. -If you do not desire to use acrylic, use a thick rhinestone gel and place a small bead of it onto the back of the charm and hold in place while curing under a LED / UV lamp for a full 60 seconds. Note: Keep away from children to avoid eating Please allow 1-3cm differences due to manual measurement, thanks. Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.