What is glass stone?
What is glass stone ? Glass stones, also called glass balls, glass pebbles, is a kind of colored glass products used for decoration or landscaping. As they are reflective and have many colors, they are very popularly used can can make very amazing projects. Glass stones are produced in professional glass kiln stoves of 1200℃. Some of them are transparent, some are not. Some colors are mixed into the glass material, while some colors are coated on the surface. Some are produced by recycled cullet material, while some are of new glass material. Different colors are derived from different pigments which are considered as commercial secret of glass factories. Thus these glass stones are very hard to produce and cost very high. Everyone knows the main ingredient of glass is SiO 2 , but most of people don’t know the ingredients of the colors. Even if they know that, it’s hard for them to produce all colors of glass easily as they also need to know when and how to add the pigments int