CRYSTAL VIBES FOR SUMMER NIGHTS. Sitting at the beach with a glass of fresh water or a colorful cocktail in our hand and… no ice? No way! Our ice cube mold adds that extra kick to enjoy your summer drink with an extra-large crystal ice cube. CREATE SOME MAGIC. Insert your Crystal Straw’s gemstone, fill it with water, put it in the freezer for a few hours and you’re set for some ice-cold crystal vibes. Made from food grade, BPA-free silicone. Create a tray for the whole family or your crystal party and get more than just one Ice Cube Maker. It's specially designed to interlock.