Nano-crystallized glass is manufactured from a blend of natural materials that is 75 percent silica and 25 percent other natural minerals. The mixture is poured into a mold to form either a slab or a tile, and it is heated to a temperature ranging from 1,550 degrees Celsius to 1,800 degrees C. for 24 to 26 hours. Nano-cystallized glass is suitable for use as a countertop material, but it can also be used for walls, floors, windowsills, sinks and tabletops.