DARICE-Cracked Ice Crystals. Just add water and these non-toxic crystals will swell and create the look of cracked ice. Perfect for floral arrangements; centerpieces; house plants; and more! Can be dried; cleaned; and reused again and again! This package contains 0.1lb/45g of clear crystals and will make a total of 2-1/2gal of finished cracked ice crystals. Made in USA.