14 Pieces of Square Acrylic (Plastic) Flat Back Rhinestones are 24mm or about 1" diameter. They are lead free (safe for skin!) and used as body gems! Good for creations at scrapbook and craft works, Perfect for card making, scrapbooks and body art. Professional grade for jewelry making, fabric embellishments, and commercial displays. Add your own glue. Used for cards and invitations, jewelry, face painting, costume making, cosplay embelishments For adult crafting, for professional / hobby use. Not intended for children under 14.