KANDI'S-Hotfix Swarovski Crystals. Add sparkle to your clothing and accessories with these crystals that look great also combined with embroidery! Embellish your purses and cell phones too! If you don't have time to embroider they look great all by themselves! No special glues needed just a hot iron and a flat hard surface. These packages contain 4mm crystals in a variety of colors. The package of Aurora Borealis Crystals contains twenty and the packages of all other colors contain twenty-four pieces. Imported.