PLATINUM SAPPHIRE AND DIAMOND RING,Circa 1925, Engraved, pierced mounting centers one round blue sapphire weighing app. 0.67 cts., surrounded by ten single-cut diamonds. Estimate $600-800
Size 8 1/2. Weighs 4 grams. Round sapphire measures 5.3mm x 3.3mm. The sapphire as a dark tone and is a slightly violetish blue with good intensity. There are ten 2.0 round single cut diamonds that are in the VS-SI1 clarity ranges and F-G in color. Assays platinum. Stamped inside the shank is "Plat".
