In a burst of glitter this flower brooch is very retro Mid Century Modern.
A prefect pin to hold a shawl, on a coat lapel or a structured jacket, even denim. The reverse shows it also has a bale, so you can wear it in a velvet ribbon as a pendant.
Diameter is 2 inches There is no marking as to the manufacturer. The pin and swivel clasp are in perfect working order, and no stones are missing, discoloured and they are not scuffed. Mint condition!