How to Identify a Raw Diamond

How to Identify a Raw Diamond: A Comprehensive Guide

Identifying a raw diamond can seem like a daunting task. With so many gemstones and minerals that can mimic its appearance, how can you be sure you’ve got the real thing? This article provides a comprehensive guide on how to identify a raw diamond, addressing frequently asked questions and offering a step-by-step process to verify your stone.

Characteristics of Raw Diamonds


Raw diamonds, or diamonds in their natural state, often look vastly different from the cut and polished stones we typically associate with this precious gem. They generally have a metallic shine with a translucent, off-white or grey color.


Contrary to popular belief, raw diamonds are not smooth but rather quite rough. The gemstone’s surface is typically covered with small, angular projections called trigons.

Steps on How to Identify a Raw Diamond

Identifying a raw diamond involves several steps, which includes careful observation, performing simple tests, and in some cases, seeking professional verification.

The Water Test

A simple and quick test you can do at home is the water test. Diamonds are dense and will sink in water, while most fakes will float.

The Fog Test

The fog test involves blowing air onto the stone. Because diamonds are efficient heat conductors, the fog should dissipate rapidly. If it stays fogged for a few seconds, it’s likely not a diamond.

The Hardness Test

Diamonds are the hardest natural material. They can scratch glass and other substances without being damaged. However, please use caution while performing this test to avoid potential damage to both materials.

Professional Verification

While the above methods can help you identify a raw diamond, they are not foolproof. It’s always advisable to seek professional verification from a certified gemologist or use a professional diamond tester for a definitive answer.

FAQ on Raw Diamond Identification

How can you tell if a raw diamond is real?

A raw diamond can be identified through a series of tests including the water, fog, and hardness test. However, for a definite answer, professional verification is necessary.

How does a raw diamond look?

Raw diamonds are usually off-white or grey with a metallic shine. Unlike polished diamonds, they are not transparent.

Are raw diamonds smooth or rough?

Raw diamonds are generally rough with small, angular projections covering their surface.

How to identify a raw diamond at home?

While you can perform simple tests like the water test, fog test, or hardness test to identify a raw diamond, these methods are not completely foolproof. Seeking professional verification is always recommended.

In conclusion, understanding how to identify a raw diamond can be a fascinating and rewarding journey. With the right knowledge, you can verify the authenticity of a diamond and understand more about this precious gemstone. However, always remember that these home-based tests are preliminary. A certified gemologist should provide the final word on whether your diamond is genuine or not. Remember, when in doubt, always seek professional help.

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