Antique 18K Gold Onyx Pearl & Rose Cut Diamonds Cameo Pin Pendant

Antique 18K yellow gold brooch pendant, featuring an oval onyx cameo depicting a lady’s profile, surrounded by a bezel of pearls and rose cut diamonds. There is a pin and a a folding pendant bail attached to the piece on the back.
16 pinkish cream color 4.5 millimeter round pearls with high luster.
32 rose cut diamonds: 1.00 ctw.
Cameo: 30 mm H x 23 mm W
Complete piece:
Height: 51 mm (including bail) 44 mm (without bail)
Width: 39 mm
Depth: 23 mm (including pin)
Weight: 20.1 grams
Electronically tested 18K gold. The cameo is signed by the carver on the back (see images).