15k solid gold antique brooch emerald pearls

Antique 15k solid gold (stamped 15 along with makers mark and fleece) brooch with green gemstone (most likely emerald) and seed pearls. Late Victorian period, Australian origin (hence the 15k gold and fleece stamp). Comes with evaluation of $990 done in 2012 so now is worth even more. 5.3g in gold 🤩 55mm long (a little over 2 inches).