Very Rare Find - Black Crystal Statement Brooch

One of my favourite brooches. Clear rhinestones that sparkle like diamonds. Black Jet colour stones that may be rhinestone, Austrian or jet black crystal’s. Well made vintage 4 prong setting. Minimal wear as per 1940’s/50’s vintage but the stones are in excellent condition. Classic Art Deco styling. Reminiscent of classical Sherman designs. Note* a slight bend to the pin but closure works.