What Makes Glass?Glass is made using three different minerals: 1.Sand (silica) Intense heat changes sand into a fragile form of glass. 2.Soda ash (sodium carbonate) This is a powdery white material...
It's not easy. If you have a lot of, say, 8mm bicones of both glass and crystal, you could weigh them (the glass separately from the crystal). The crystal should weigh more than the glass.
However,...