News — Glass Awards

Difference between Crystal and Glass

Key difference: Glass is a generic name, while, crystal is a subcategory of glass, made in the same manner as glass but with different materials. Hence, all crystal is glass, but not all glass is crystal. There are three primary criteria for crystal as established by the European Union: a lead content in excess of 24%, a density in excess of 2.90 and a reflective index of 1.545. Scientifically, crystals are pure substances whose atoms, molecules, or ions are arranged in an ordered pattern, where they extend in all three spatial dimensions. Crystals most commonly occur naturally on the earth, though...