Solid 10K White Gold, carved cameo, best quality Filigree , late Art Deco

Beautiful Antique/vintage solid 10K (mark on the bale) white gold cameo brooch which came from my mother’s estate. This cameo carved in end of 1920th or beginning of 1930th. A neighbor of mine, a retired jeweler, said the diamond appears to be about 6 points. No damage whatsoever. The piece measures 1 7/8” tall and 1 3/8”or 45 mm. x 33 mm. wide. Signed by the sculptor on the back of cameo by acid.