A unique, abstract design plaque ring collet set with a 7mm round cabochon amethyst. The ring face measures 16mm x 8mm. On a plain shank. Attributed to Mary Waterhouse Robson. Dates to c. early 1970s.
Measurements: UK size P 1/2 or USA size 7 3/4
Weight: 4.5 grams
Hallmarks: none, tests as 14ct gold