Found 2 items, similar to demantoid.
English → English (WordNet) Definition: demantoid demantoid n : a green andradite used as a gemstone
English → English (gcide) Definition: Demantoid Demantoid \De*man"toid\, n. [G. demant diamond + -oid.] (Min.) 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. [1913 Webster]