Source : Webster's Revised Unabridged Dictionary (1913)

Bloodstone \Blood"stone`\, n. (Min.)
   (a) A green siliceous stone sprinkled with red jasper, as if
       with blood; hence the name; -- called also {heliotrope}.
   (b) Hematite, an ore of iron yielding a blood red powder or
       ``streak.''

Source : WordNet®

bloodstone
     n : green chalcedony with red spots that resemble blood [syn: {heliotrope}]