Exhibit Antiques has dated this piece to the 1880s.
An outer ring of Scottish Agate gemstones with a further central cross of agates with smaller shields all set in beautiful ornate Silver.

A superb example.
Date & Origin
Scotland, c1880.
Condition
Excellent, age-related wear. Pin to rear in working order. Some small fritting chips and one fault line to the yellow stone as shown. Silver, makers mark under the pin.
Dimensions
Diameter: 4.5cm
Exhibit Antiques has dated this piece to the 1880s.
Specialists in 18th & 19th century antique glass
You can view the stock and full dealer information on the Exhibit Antiques Profile Page