Opalescent Glass
Beginning about 1884, Northwood Glass Company (1888–1924); Jefferson Glass Company (1900–1930s); Hobbs, Brockunier, & Company (1863–1888); and other companies made colored glassware with bluish-white patterns and edges. The factories used the term opalescent to describe the glass because of its similarity to the opal gemstone. There are two molding processes used to make opalescent patterns. […]