Blue Ridge Brand&trade; Dark Blue Reflective Fire Glass Beads - 20-Pound Professional Grade Fire Pit Glass - 3/4" Reflective Glass Fire Pit Landscaping Tumbled to remove sharp edges. Perfect for fire pits, vase fillers, and garden landscapes. These smooth, round glass pieces 3/4" in diameter. Glass will not melt, discolor, give off fumes, or break down. An economical and reusable choice - lasts longer than firewood.