Jeff Sims Antiques has dated this piece to the 1890s.
The terminal is not marked but tests positive for 22ct gold and is set with graduated seed pearls. The pin is also gold and tests positive for 14 ct.

Presented here in an original box, this would make an elegant accessory and a wonderful gift idea. Dimensions below.
Postage and packing £12.00 UK
£20.00 Europe
£24.00 Outside Europe
Condition :- Excellent, with no dents, losses or splits.
Date :- c1890.
Hallmarks :- Tests positive for 22ct/14ct gold. Unmarked.
Origin :- English.
Height :- 6.5 cms.
Width :- 1.5 cms.
Depth :- 0.5 cms.
Jeff Sims Antiques has dated this piece to the 1890s.
Specialists in antique silver, glassware and objects of vertu
You can view the stock and full dealer information on the Jeff Sims Antiques Profile Page