Glass and crystal both start as a transparent material that is made from natural materials including sand, limestone, and soda ash. Crystal, however, also has lead oxide, barium oxide, zinc oxide ...

Antique Cut Glass Patterns to Look For The first cut glass may date back to around 1500 BCE, but the most famous and collectible patterns come from the American brilliant cut glass period of 1876 ...

A. Your set of crystal is in the “Cambridge Circle” pattern, by the Cambridge Glass Company of Cambridge, Ohio. This company was in business from 1873 to 1958.