How do I date a clear lead glass decanter?

Dating relies on stylistic clues such as shape, neck ring configuration, and cutting techniques. Georgian and Regency examples often feature distinct shoulder profiles and heavy pillar moulding, while Edwardian pieces display lighter overall cuts. Examination of the pontil mark on the base also helps determine the manufacturing period. Older vessels typically show a rough, unpolished pontil scar from the maker's iron rod.

Were these decanters used for water or spirits?

They served multiple functions depending on their form and engraved labels. Tall carafes and ewers were suited for water and claret, while smaller spirit decanters held whisky, brandy, or Madeira. Many period pieces include specific engraved titles on the body to denote the intended contents. Others remain unmarked to allow versatile use across different beverages.

What is the difference between glass and lead crystal?

Lead crystal contains a significant percentage of lead oxide, which alters the physical properties of the material. This addition increases the density, weight, and refractive index compared to standard clear glass. As a result, lead crystal pieces produce a more resonant sound when struck and display sharper light dispersion through cut facets.