Musgravite

Musgravite, Be(Mg, Fe, Zn)₂Al₆O₁₂, is a gemstone reportedly named after the Musgrave Ranges, Australia, where it was first discovered. It is a synonym of magnesiotaaffeite-6N’3SIt, a member of the taaffeite family of minerals. Its hardness is 8 to 8.5 on the Mohs scale.