Extra Large Heart flat back acrylic (plastic) rhinestones are 60mm or 2-3/8". Includes 2 Pieces. Perfect for Steven Universe, World of warcraft, league of legends cosplays and weapons gems! Faceted with flat back and silver backing. Professional Grade, perfect for costumes and displays. These Acrylic jewels are great for displays, POP, merchandising, window displays, wall and theatre decoration, costume making, cosplays! Very popular as as costume gems for cosplay. They are lead free (safe for skin!) and used as body gems! Suitable for party supplies, props, and theatrical performances. 100% Satisfaction Guaranteed! Lead Free. CPSIA and RoHS compliant. These are superior quality acrylic (Plexiglass) gems. Unlike the ones you'll find in most craft stores or hobby shops. Great for card making embellishments, jewelry making projects, scrapbooking, garments, as face gems etc. High Quality! Add dimension and sparkle to your projects with these fine quality acrylic gems. Easy to use, fun to do. You can try a lot of different glues to bond acrylic stones but you cannot use any containing isocyanate (the instant adhesives), or acetone because the strong solvents damage the backing of the stone. A clear drying adhesive is recommended. Recommended glues for skin are: Acrylic Adhesive (Spirit Gum), Bindi or Eye Lash Glue.