How do I identify cameo glass?

To identify cameo glass, tilt the piece and study how the light reflects off it. Imitations are often very glossy and reflective, while genuine cameo glass has a much subtler, softer sheen. You can also search your piece for a maker's mark and then utilize online resources to determine who produced it and if it was known for making cameo glass. Some companies and workshops that manufactured cameo glassware include Thomas Webb and Sons, which often used a “GEM CAMEO” maker's mark; Emile Gallé, which used its brand name on a paper label or as an etching directly onto the glass; and Verrerie Schneider, which utilized its name or the word “CHARDER” as a marking. When in doubt about your glassware, consult a certified appraiser or experienced antique dealer. On 1stDibs, shop a collection of cameo glass.