This lovely Egyptian Revival watch pin is 14 k gold set with an oval opal. It dates from ~1880. The original catch has been replaced with a more modern safety catch. The pin is 1 1/2" wide by 5/8" high.

This Egyptian Revival stickpin tests as 10 k gold. The decorative head is 7/8" in length and the pin overall is 2 5/8". A clutch will be supplied with the pin. The yellow "stone" appears to be glass.