Gemisphere’s Bloodstone necklaces are 100% free of artificial treatments. The gems are a naturally rich and consistent dark green, with occasional patches or spots of red and other therapeutically beneficial colors.  Therapeutic Quality Bloodstone The color of therapeutic Bloodstone is a distinct, rich, and consistent dark green. Therapeutic Bloodstone also contains red flecks and, occasionally, flecks of orange or yellow. Of these colors, red represents the highest quality, orange is next best, and yellow the next. Ideally, the flecks are distinct and appear either as tiny pinpoints or larger patches and do not dominate the green color. The presence of shiny pinpoints that look like translucent crystalline structures is beneficial. White flecks or patches are not desirable. Bloodstone spheres that are bluish or muddy or in which green does not dominate are not therapeutic. Bloodstone is best evaluated in direct sunlight, where one can assess the color, translucency, and flecks most accurately. The higher the quality of the Bloodstone, the more effective it is at enhancing the mutable bodies’ ability to absorb toxins and transform vitamins and minerals in the blood into bioavailable forms.