How to Tell if Green Tourmaline is Real

Hey there, gemstone enthusiasts! If you’re as captivated by the allure of green tourmaline as I am, you’d probably want to make sure that the gem you’re holding is the real deal. In this guide, I’ll walk you through some simple yet effective methods to distinguish between genuine green tourmaline and its imitations. Let’s dive in and unlock the secrets of this stunning gemstone!

  1. Observation and Color: First things first, take a close look at the gemstone’s color. Authentic green tourmalines showcase a captivating range of greens, from pale mint to deep forest hues. Be wary of overly uniform colors or neon-like shades, as these could indicate a possible imitation.
  2. Inclusions and Flaws: Real green tourmaline often contains natural inclusions, such as tiny crystals or subtle internal fractures. These imperfections are nature’s signature and can help authenticate the gem. However, if you spot glaringly perfect clarity, it might be a sign of a synthetic or fake stone.
  3. Refraction and Brilliance: Hold the tourmaline up to a light source and observe how it sparkles. Gently tilt the gem, and you should see a beautiful interplay of light within the stone. Genuine green tourmalines have a unique refraction due to their crystal structure, creating a mesmerizing brilliance that’s hard to replicate.
  4. Density and Weight: Feel the weight of the gemstone in your hand. Authentic tourmalines are relatively heavy for their size due to their natural density. If a gem feels unusually light, it could be an indication that it’s not genuine.
  5. Thermal Conductivity: This might sound technical, but it’s quite easy to test. Hold the green tourmaline between your fingers for a short while, then gently touch it to your lips. A genuine gemstone should feel cool to the touch due to its ability to conduct heat away from your skin. If it feels warm or room temperature, it might be a fake.
  6. Scratch Test: Gently try to scratch the surface of the gem with a sharp object like a needle or a piece of glass. Green tourmalines rank 7-7.5 on the Mohs scale of hardness, so they should resist minor scratches. If the stone shows significant marks, it might be an imitation.
  7. UV Light Reaction: If you have access to a UV light source, check the reaction of the tourmaline under it. Many genuine green tourmalines display fluorescence, emitting a subtle glow when exposed to ultraviolet light.


Congratulations, you’re now equipped with some valuable tools to determine the authenticity of your green tourmaline! Remember, while these methods can provide a good indication, it’s always wise to consult a professional gemologist for a definitive assessment, especially if you’re considering a significant purchase. Whether you’re an avid collector or simply someone who appreciates the beauty of gemstones, being able to identify a real green tourmaline adds an extra layer of appreciation to your treasure trove. Happy gem hunting!

So there you have it – a detailed guide on how to tell if your green tourmaline is the real deal. Embrace the world of gemstones and enjoy the journey of discovering their unique beauty!

Also read: how rare is green tourmaline

Jyotish Varsha Gupta
Varsha Gupta


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