|Color||Grey green to green|
|Mohs scale hardness||8–8.5|
|Refractive index||nω = 1.739, nε = 1.735|
|Birefringence||δ = 0.014 to 0.016|
Musgravite or magnesiotaaffeite-6N’3S (chemical formula of Be(Mg, Fe, Zn)2Al6O12), is a rare oxide mineral. It is used as a gemstone. Its type locality is the Ernabella Mission, Musgrave Ranges, South Australia for which it was named. It is a member of the taaffeite family of minerals. Its hardness is 8 to 8.5 on the Mohs scale.
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