Are these vases suitable for daily use?

Many examples function well for holding fresh flowers, though older or more delicate pieces benefit from careful handling during arrangement. Placing a protective mat beneath heavy crystal prevents scratching polished surfaces. Consider the weight and centre of gravity when choosing stems for large trumpet shapes. Delicate cameo and opalescent vessels are often best appreciated as standalone decorative objects.

How do I identify the period of a piece?

Examine the overall design style, such as the curved motifs of Art Nouveau or the geometric lines of Art Deco. Tool marks, pontil scars on the base, and signature styles offer further clues to the date of manufacture. Compare the colour palette and manufacturing technique with documented examples from known makers. Researching similar pieces helps narrow down the likely decade of production.

What causes iridescence on glass?

Iridescence results from metallic salts sprayed onto the hot glass surface during the manufacturing process. This treatment creates a shimmering, rainbow-like effect across the exterior. Art Nouveau makers favoured this finish to mimic ancient weathered glass found in archaeological excavations. Clean these surfaces with particular care to preserve the thin metallic sheen.