Lapis Lazuli Slabs
Lapis has been prized as a gemstone since ancient Egypt. It
cuts easily and polishes with tin or chrome oxide, with a tiny bit
of aluminum oxide type A mixed in. In order to obtain a higher polish,
it can be given a final polish with Zam
or waxed. Lapis usually has pyrite in it.
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Example of a Lapis Lazuli Cabochon.
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