Puckerings has dated this piece to the 1920s.
The front is set with a large oval cut Cairngorm stone.

The hallmark also contains the initials for the maker, R.C, for the silversmith, Robert Chandler.
Excellent condition weighing 32.4 Grams / 1.04 Troy Ounces and measuring 1 7/8" wide x 1 1/2" deep including mount x 1 1/2" tall at front.
Item ID: 34329
FREE Worldwide Registered Airmail Directly From London, England
Puckerings has dated this piece to the 1920s.
A quality online collection of fine english antique smalls with free worldwide shipping from london, england
You can view the stock and full dealer information on the Puckerings Profile Page