Musgravite – $6,000 per carat

 

Musgravite (Credit: Multicolour.com)

Musgravite (Credit: Multicolour.com)

Musgravite (Be(Mg, Fe, Zn)2Al6O12) was originally discovered in 1967 in Musgrave Ranges, Australia. This very rare and hard gemstone is in the same family as taafeite that appears later in this article. As noted in the elemental composition, Musgravite is an aluminum oxide with variable proportions of magnesium, iron, and zinc.

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