Stick-On Heart Rhinestones (Red and White AB) These heart-shaped red and crystal aurora borealis stick-on rhinestones are a fun addition to any project! Add sparkle and shine to your scrapbooking pages, card making crafts or other custom projects. Our stick on rhinestones are ideal for crafting because they dont require glue or messy glitter. Each package of craft rhinestones includes 19 pieces. The sizes of the small hearts at their widest point are: largest hearts are .50 inches across, medium size hearts are .375 inches across, and the smallest hearts are .25 inches across.