From my private collection, this stone is so lovely it makes my eyes puddle up. 14x10mm Australian solid black opal cabochon of 2.87 carats. Incredible color and shimmer. Actual dimensions are 13.77x9.99mm so it will easily set into standard 14x10 mounts. I acquired the stone in 2006 and it has remained sealed in its gem jar since.
Opals are fragile gems and I strongly recommend a sturdy setting, one that provides lateral protection such as a bezel mount. The other option, of course, is to mount it in a piece of jewelry not likely to get banged up, such as a pendant. Rings can take a terrible beating even if we don't mean for them to. Whatever you decide, this will make your next project outstanding.
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