Is It Flint Glass?

Books, auction catalogs, and dealers describe glass as flint (or lead glass) or nonflint (or lime glass). Early glassmakers used varying amounts of lead in the glass for clarity and brilliance. Most glassware made before the 1860s has a lead content. In 1864, William Leighton Sr., of Hobbs, Brockunier & Company, invented a lime glass […]