Sunstone can be Clear, Yellow-ish and can contain actual Copper sheets or flecks in it giving it an amazing affect. The latter is often referred to as Schiller. The copper stain often found in Oregon Sunstone usually has a Red or Brownish-Red hue but can also look Green. Often those colours are found looking like a Bulls-Eye. Depending on the angle this Sunstone is viewed, the Red can change to Green as the stone is rotated, displaying its “Pleochroism”.