Puckerings has dated this piece to the 1930s.
Most of these boxes were trimmed in sterling silver or silver gilt (gold over silver), I am unable to sell as such as there isn't a hallmark, so am selling as gold on metal for accuracy. The hinge is also marked "Made in England". The stone is also engraved on the underside "Made In England".

The shape with it's cantered corners is particularly nice and the patina better than most with a bright shiny finish.
A highly collectable box in excellent condition measuring 6 1/4" x 4" x 2",
Item ID: 40203
FREE Worldwide Registered Airmail Directly From London, England
Puckerings has dated this piece to the 1930s.
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