Black Crystal Opal has a transparency which allows the dark body colour below the surface to be visible.
Black Opals have a black opal potch base and a light crystal colour bar giving the opal a dark appearance. Even expensive black opals may have only a thin colour bar on grey or black potch.
Because black opal is rare, there are doublets and triplets simulating black opal, it's like real wood and wood veneer.
Doublet is a layer of precious opal glued to a black backing. (Look for the straight glue line)
Triplet is a paper thin slice of precious opal glued to a black backing with a plastic dome or clear quartz cap glued to the top. (Look for the clear cap from the side)
Sorry, we don't have doublets or triplets -
only pure natural opals!
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