.50ct+ BLUE NILE Black Opal Oval Cabochon Loose Stone 7x5mm
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This .50+ carat Black Smoked Ethiopian Opal is an oval cabochon cut that measures approximately 7x5mms. This gem has a semi-translucent medium to dark base with a display of fire that varies but may include green, red, orange, cobalt blue, and yellow.
Ethiopian Opals are relatively new to the market, discovered in Africa in the mid 1990s. This variety has some of the finest color play of all other Opals, with a diverse range of colors and fire patterns.