demantoid

2 definitions found

demantoid - Collaborative International Dictionary of English v.0.48 :

  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]

demantoid - WordNet (r) 2.1 (2005) :

  demantoid
      n 1: a green andradite used as a gemstone