Opals Stone that flashes fire. Capt. Ted Syman located 2000 .year old opal quarry of Aztecs and stones T-,,ill be polished here. News Feb. 14, ' 1931 p.2 Rainbow ridge mine and the worlds largest opal. Desert mag. v.18 n.8 Aug., 1955 p.ll Opal diggings on the Mojave Desert. Desert v.21 #11 Nov. 1958 p.18-21 Desert magazine. Apr., 1947 p.27 Found in California gulch. RMN Oct. 3, 1860 p.2 c.2