This listing is for 400 Pieces. Round 8mm or 5/16" high quality flat back acrylic (plastic) rhinestones. Assorted colors (colors may vary from picture based on the availability). Used for scrapbooking, fabric embellishments and general crafts. Good for creations at scrapbook and craft works, ornaments for costumes, or home decor etc. These Flat Back with mirror coating gems are great for home decor, party supplies, photography props, and theater performances. Used for cards and invitations, jewelry, face painting, costume making, cosplay embelishments. Perfect as costume gems for cosplay and face jewels