Home » Gemstones » Opal » Boulder Opal

Boulder Opal


Pictures of Boulder Opal


Boulder Opal

What is Boulder Opal?

"Boulder opal" is a term used for a rough or a cut gemstone that displays opal within its surrounding rock matrix. Opal often forms within voids or fractures in its host rock, and specimens of boulder opal reveal this aspect of opal's origin. The contrast of color can be striking when a bright flash of opal is seen within the surrounding rock material. Many people enjoy the natural appearance of boulder opal and find these gemstones to be beautiful, interesting and educational. The specimens shown here are boulder opal beads cut from Australian boulder opal.




boulder opal


More Gemstones
  100+ Gems
  Pictures of Opal
  Gaspeite
  Ruby and Sapphire
  Diamond
  Emerald
  Amethyst
  United States Gemstones

geology store