Demantoid

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]



From WordNet (r) 2.0 [wn]:

  demantoid
       n : a green andradite used as a gemstone