heliotrope bloodstone gemstone on white - macro

agate background bead bloodstone blue cabochon chalcedony close closeup collection color crystal decorative earth gem gemmology gemology gemstone geological geology green heliotrope inclusion isolated jasper jewelry little macro meat mineral mineralogical mountain natural nature object ornamental pebble piece polished precious red rock sample semi semiprecious shooting small specimen spot stain stone structure surface texture tumbled vein white