7. TECHNICAL QUESTIONS ABOUT HISTORICAL GLASS (pulldown menu)

THE FOLLOWING PAGES DISCUSS THE TECHNICAL ASPECTS OF HISTORICAL GLASS.

Click on title questions to see the discussion pages

WHAT IS THE CHEMISTRY OF ROMAN GLASS ?

Roman Glass, Allaire Collection

WHAT IS THE DIFFERENCE BETWEEN OPAL, DICHROIC AND OPALESCENT GLASS?

104E Art Nouveau glass vase 1890-1900

1925 Lalique Suzanne Art Deco Opalescent Glass

1925 Lalique Suzanne Art Deco Opalescent Glass

WHAT IS THE IRIDESCENCE ON ANCIENT GLASS ?

24R Roman double balsamarium 4-5th C

32R Roman candlestick balsamarium 2-3rd Century 18.5 cm

WHAT IS THE IRIDESCENCE ON ANCIENT AND MODERN GLASS ?

Tiffany’s Favrile “Pansy” vase 1894

Hans van Rossum collection of glass

 

CLEANING ANCIENT AND ARCHAEOLOGICAL GLASS

Before

After

WEATHERED ARCHAEOLOGICAL GLASS

22R before cleaning

22R after first cleaning

22R after second cleaning