Excellent large Art Nouveau 14K Gold,Pearls,Diamond Plique-a-Jour enamel convertible Brooch/ Pendant

Excellent large Art Nouveau 14K Gold, Seed Pearl and Diamond Plique-a-Jour enamel convertible Brooch/ Pendant / Necklace
Art Nouveau 14K Gold, antique Seed Pearl and Diamond Plique-a-Jour convertible Brooch Pendant Necklace Designed as a braided chain of seed pearls suspending an inverted flower design pendant set with pearls as dewdrops and rose-cut diamonds,in settings that form little butterflies landing on the plique a jour enamel and gold flower. the chain length 37 in., pendant measures 1 7/8 x1 1/4 in.
Condition Report: well done piece circa 1900