demantoid
De*man"toid, n. Etym: [G. demant diamond + -oid.] (Min.) Defn: A yellow-green, transparent variety of garnet found in the Urals. It is valued as a gem because of its brilliancy of luster, whence the name.
De*man"toid, n. Etym: [G. demant diamond + -oid.] (Min.) Defn: A yellow-green, transparent variety of garnet found in the Urals. It is valued as a gem because of its brilliancy of luster, whence the name.