Antique Old European Cut Diamond Three 3 Stone Engagement Ring 1.66 ct Platinum

This antique three-stone engagement ring is platinum, with a natural 1.38 ct Old European Cut center diamond, G-H in color and SI2 in clarity. The total carat weight is 1.66 ct. Two natural tapered baguette cut side diamonds weigh approximately 0.28 ct, F-G in color and VS in clarity. The ring weighs 5.4 grams and is size 5.75. The ring has been resized in the past. The head tested as 900 platinum, but the shank shows a high reading of palladium, so it reads as 750 platinum. The ring is stamped "10% Irid Plat".