A ladies platinum and diamond ring having

A ladies platinum and diamond ring having 3 marquise cut diamonds, 1.10 cts approximate total, H-I color, SI clarity, with 42 single cut diamonds, .50 cts approximate, on a platinum shank. Stamped `Platinum`. 6.6 grams. Size 5.25, top .50 x .70`, Circa - Early 20th C.