Agate and gold case 18th century

Zoned agate trapezoidal hinged case adorned at each end with a fine leaf and flower garland clasp. Clasp set with an old-cut diamond. Cap set with a ruby. English work from the second half of the 18th century.
Hallmarked with 2 owls, 18 ct gold.
Weight 38,4 g.(
Dim: H 3.74 in / W 0.78 in