Black Reflective Nugget - Diamond Fire Pit Fireplace Glass - 5 Lbs 100% Genuine Diamond Fire Glass product (Approx. 1/2 Inch size crystals) The Ultimate Fireplace or Fire Pit Upgrade that Sparkles!!! Easy Installation, Specially Formulated High Heat Tempered Glass, Energy Efficient, Enviromentally Friendly Our Unique Hand Crafted Process Ensures Your Fireplace Fire Pit Glass Will Sparkle With A More Brilliant Shine! Replaces Lava Rocks or Gas Logs For A Modern And Elegant Look