Exhibit Antiques has dated this piece to the 1850s.
The silver is mounted with a handmade scrolling c-clasp and tube hinge. The silver is set with four stones including bloodstone and red jasper. The "classic" bloodstone is green jasper (chalcedony) with red inclusions of hematite.

Date & Origin
Scotland or England, c1880. Period of Victoria.
Condition
Excellent, age-related wear as shown. Pin to rear in full working order. Silver unmarked which is quite normal for Scottish Jewellery of this type.
Dimensions
Diameter: 4.8 cm
Exhibit Antiques has dated this piece to the 1850s.
Specialists in 18th & 19th century antique glass
You can view the stock and full dealer information on the Exhibit Antiques Profile Page