Platinum, Diamond and Mexican Opal Brooch.. Photo: Courtesy Doyle New York One fire opal ap. .95 ct., 74 diamonds ap. 2.70 cts., c. 1920, ap. 6.7 dwt. Estimate $2,000-3,000 Two-Color Gold, Fire Opal and Diamond Pendant with Platinum and Diamond Chain....

Opal and Diamond Brooch. Photo: Courtesy Doyle New York White gold, one oval opal ap. 34.00 cts., 75 diamonds ap. 7.25 cts., ap. 13 dwt. Estimate $4,000-6,000 Pair of Blackened Silver, White Gold, Diamond and Opal Pendant-Earrings. Photo: Courtesy Doyle...