Hydrogrossular Garnet (Transvaal "Jade")
Slabs
Hydrogrossular garnet is also called Transvaal Grossular Garnet
or Green "Jade". It is a rare, dense and opaque green grossular garnet
where hydroxide partially replaces silica. Mohs hardness 7. Although
jade has a reputation of being hard to polish, it polishes well with
diamond and takes a high polish with chrome oxide.
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Example of a Hydrogrossular Garnet Cabochon.
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