taaffeite
noun
taaffe·ite
ˈtäˌfīt
plural -s
: a rare mineral BeMgAl4O16 consisting of oxide of beryllium, magnesium, and aluminum and resembling mauve-colored spinel
Word History
Etymology
Count Edward Charles Richard Taaffe, born 1898 Irish gemmologist born in Bohemia who first found it as a faceted gem + English -ite