Early 20th century 14K yellow gold Amethyst split pearl brooch pin 3.4g JR9940

Early 20th century 14K yellow gold Amethyst split pearl brooch pin 
Amethyst is 5.5mm; the genuine cultured split pearl is 1.8mm.
The brooch size is 2 1/8" x 1/2"
Weigh 3.4 grams, no hallmark, tested 14K