Psst... Ready to join TalkBass and start posting, make new friends, sell your gear, and more?  Register your free account in 30 seconds.

jasper


Jasper, an aggregate of microquartz and/or chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. The mineral aggregate breaks with a smooth surface and is used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9. Along with heliotrope (bloodstone), jasper (green with red spots) is one of the traditional birthstones for March. Jaspilite is a banded iron formation rock that often has distinctive bands of jasper.

View More On Wikipedia.org

    Recent Content Tagged With jasper

  1. LowNloud1
    Roughed out picks
    Uploaded by: LowNloud1, Feb 16, 2016, 0 comments, in album: Stone Bass Guitar Picks
  2. LowNloud1
    Uploaded by: LowNloud1, Feb 16, 2016, 0 comments, in album: Stone Bass Guitar Picks