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  1. Opal - Wikipedia

  2. Opal Gems: Value, Price, and Jewelry Information - IGS

  3. 14 Different Types Of Opal And What They All Look Like

  4. Opal Gemstone | Opal Stone - GIA

  5. Opal Stone Meaning, Uses, Properties, Value, & More

  6. Pictures of Opal - Black, Fire, Boulder, Blue and Pink

  7. 21 Legit Places To Find Opal In Oregon In 2024 - Rock Chasing

  8. What Is Opal - Gemstone Facts and Information - Gemporia