This beautiful piece is from the Golden Age of costume jewelry in the United States -- the 1940s! I believe it is Coro but it is not signed. It is, however, just fantastic!
It has three sections, two smaller ones on either side of a large center piece. The cold enamel is done in two shades of pink and green. It is done on white metal. There are pink and clear rhinestones that embellish the blooms. The enameling is in very good condition! The center section measures 2 1/4" by 1 5/8". The sections on either side measure 1" by 3/4". Even the connectors between the centerpiece and the side sections are embellished with rhinestones. Wearable length of this exceptional necklace is 17".
Frankly, can you tell I am having a hard time parting with it?!