Vintage 18ct Gold and Platinum Three Stone Diamond Ring

This very pretty 18ct gold and platinum ring is set with three sparkling diamonds.
The diamonds are claw set in platinum.
The shank is 18ct yellow gold.
Excellent condition.

Dated: c1960
Stamped: 18CT PLAT
Diamond weight: .50ct
Weight: 2.7 grams
UK Ring size: O
US Ring size: 7 1/4