Vintage 10ct, 10k Gold black Opal doublet on map of Australia, Stick, tie pin

Unusual 10carat gold black opal doublet stickpin designed as a map of Australia, mounted on a gold barley twist pin.

The
head of the pin is a cut out of Australia with a 7x5mm black Opal
mounted in a collet, millgrain setting. The head of the pin measures
12.9x 10.8mm and 3.4mm in depth.

The black opal (presumed to be a
doublet) is very fiery and has intense flashes of colour (there is a
tiny bit of abrasion, visible under a jewellers loupe)

Hallmarked 10K (denotes 10carat gold).

This unusual stick pin is beautifully presented in new black leatherette & velvet box as displayed.

MEASUREMENTS: 12.9 x 53.3mm
HALLMARKS: As above
CONDITION: Good
DATE: Modern (1960 to present day)