https://seizedpropertyauctions.com/auctions/262/lot/4058372-block-flashing-187ct-black-opal-cabochon
Block flashing 1.87ct black Opal cabochon - Seized Property Auctions
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https://www.krantz-online.de/en/black-opal-cabochon-cut-eth/FA045
Black opal, cabochon cut, ETH | FA045
Cabochon cut.Locality: EthiopiaSize: approx. 10 x 7 mm, ca.1,04 ct.Supplied in a glass lid box.Colors in product photos may differ slightly from those of the...
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https://backroomgems.com/product/block-flashing-1-87ct-black-opal-cabochon/
Block flashing 1.87ct black Opal cabochon - Backroom Gems
Mar 26, 2025 - A full spectrum of colors play in reds, blues, greens, and oranges in a fantastic block pattern. This excellent Ethiopian Opal glistens under its liquid luster...
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https://lampworksupply.com/product/4mm-black-round-cabochon-opal-with-red-fire
4mm Black Round Cabochon Opal with Red Fire | Lampwork Supply
4mm black round cabochon opals with red fire. These cabochons are domed on one side and flat on the other. All opals sold at Lampwork Supply are lab crea...
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