Chinese New Year. In the decorative arts, a bird is rarely just a bird and a flower seldom represents a simple flower. These evocative symbols conjure different narratives, ideas, and emotions according to the context in which they are portrayed and the viewer who observes them. That is what makes them so powerful.
Glass is formed by heating sand to its melting point. Objects are  then either cast or blown to their desired shape and allowed to  cool slowly    Glass is made from â¦ a mixture of sand and other materials. Just  regular sand can be made into glass, but it must be heated to about  3,000 degrees Fahrenheit.
The major ingredient for glass making is silica, in the form of sand. Only sand of exceptional purity can be used to make glass. If the sand contains a trace of iron, for instance, the glass made with it will have a greenish color. Even for ordinary window glass, sand must be better than 99 percent pure silica, perfectly white, and not too fine. But I guess if you are looking for 4 main ingredients... Silica Sand 60% Soda Ash 20% Limestone 15% Alumina-Silicate 4% Those are the 4 main I could find. But really it's all about the sand.