Vevor Caribbean Blue fire glass adds a bright, reflective accent to fire pits, fireplaces, and decorative displays. Made from standard fireproof glass derived from quartz sand, it is designed to withstand high temperatures without cracking, darkening, smoking, or leaving ash. The 20 lb pack features 1" diamond-style glass beads for a bold, uniform look. It can also be used in aquariums, gardens, and other decorative settings. Cleaning is simple with a rinse to restore its shine.