Jack | Vintage Koroit Boulder Opal Ring in 14kt White Gold, c.1930's Ametrine origin: Lander County

origin: Lander County

27 round cuts

25 carats

average color: H-I

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Jack | Vintage Koroit Boulder Opal Ring in 14kt White Gold, c.1930's Ametrine origin: Lander CountyMeet Jack, A Koroit Boulder Opal in a Vintage Solitaire Ring The Stone: Koroit Boulder Opal, solid origin: Koroit Opal Field, Queensland, Australia brightness of color: 3 of 5 approximate stone measurements: 16. 57mm x 10. 8mm x 4. 68 rectangular cabochon cut modern stone The Setting: Vintage Filigree Solitaire Ring 14kt white gold, solid North South stone orientation top of ring width: 20. 16mm (0. 8") bottom of shank width: 2. 24mm default size: 4.