Source : Webster's Revised Unabridged Dictionary (1913)

Rhodonite \Rho"don*ite\, n. [Gr. "ro`don the rose. ] (Min.)
   Manganese spar, or silicate of manganese, a mineral occuring
   crystallised and in rose-red masses. It is often used as an
   ornamental stone.

Source : WordNet®

rhodonite
     n : a pink or red mineral consisting of crystalline manganese
         silicate; used as an ornamental stone