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Opal Gemstone Blog
Learn about Cornwall Gem, an independent UK opal seller committed to quality, ethical sourcing and excellent service. Explore our passion for Australian opals.
Discover premium opals in every colour and grade. Choose from polished stones, rough material, specimens and cabochons. Carefully selected and shipped worldwide.
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How to identify real opals
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Australian opal fields explained
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The difference between boulder opal and black opal
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Caring for opals in different climates
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Why opal collectors value colour play
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