now differentiate between these items, describing the degree of iridescence showing.

The most popular colour for carnival glass is now known by collectors as 'marigold' although that name was not in use at the time. Marigold has a clear glass base and is the most easily recognizable carnival colour. The final surface colours of marigold are mostly a bright orange-gold turning perhaps to copper with small areas showing rainbow or 'oil-slick' highlights. The highlights appear mostly on ridges in the pattern and vary in strength according