How to Identify Real Onyx: Key Features and Tests Explained

Learn how to tell real onyx by checking banding, layered structure, hardness, and consulting a gemologist for accurate verification.

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Real onyx often features parallel bands of black and white or other colors. To test authenticity, check for layered structure under magnification and cool surface temperature. Consider a Mohs hardness test; onyx has a hardness of 6.5-7. Lastly, consult a professional gemologist for verification.

FAQs & Answers

  1. What is the Mohs hardness of onyx? Onyx has a Mohs hardness rating between 6.5 and 7, which helps differentiate it from other similar stones.
  2. How does the layered structure help identify real onyx? Real onyx shows a layered structure under magnification, which is a key indicator of its authenticity.
  3. Can a professional gemologist confirm if onyx is real? Yes, a gemologist uses specialized tools and knowledge to accurately verify the authenticity of onyx.