Description Koch Platinum, Emerald, and Diamond Ring One square-cut emerald ap. 3.75 cts., 16 round diamonds ap. .65 ct.,signed Koch,circa 1930, ap. 5 dwts. Size 7 1/4. C From the Estate of European Collector Family品相报告: Condition Report Emerald: medium very slightly bluish-green, moderately included throughout, visible inclusions, more so at one corner, several surface-reaching, transparent, few abraded facets, lively. Diamonds: H-I-VS-SI. 7/8 x 9/16 inch. Any condition statement is given as a courtesy to a client, is an opinion and should not be treated as a statement of fact and Doyle New York shall have no responsibility for any error or omission. Please contact the specialist department to request further information or additional images that may be available.