The density of glass ranges from around 2,200 kg/m³ to around 3,700 kg/m³ and sometimes even more. Annealed glass is typically set to 2,500 kg/m³, while tempered glass's density is around 2,520 kg/m³. Other glass types like the borosilicate glass, even though they are treated to withstand high temperatures, are surprisingly lighter at around 2,230 kg/m³. Read more