What's color changing glass?

A glass manufactured goods that needs extra awareness is Color Changing Glass. The name speaks for itself, by totaling special supplements this glass gets the most good-looking colors and besides changes color and can be made in very beautiful shapes, it also has the eminence of being very hard and only in reality breaks if one drops it on a hard outside. Nowadays, other products as well the smoking pipe are available. Many glass blowers make real works of art which are very expensive to purchase. Because these objects are now looked upon as art, a collectors market is starting to develop in which the design of sure artists can add to in value.