Opals
Gemstones
Jewelry
Coins
Gold Opal Jewelry Sets
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Gold Opal Jewelry Sets
Opals set in gold are mostly valuable opals, such as black opal or boulder opal or fire opals. As it is difficult to make a perfect match.
- Boulder opal is formed in ironstone, so some boulder rock splits do make good Opal jewelry sets.
- Fire opals, if formed as seam opals, or long piece that can be cut can make matching sets.
- Black opal is extremely hard to make sets even if the opal is cut from the same potch when mined.
Most opal jewelry sets are 18K gold stamped hallmark 75
