Diamond Articles

3 Easy Tests to spot a fake diamond

August 18, 2017 - Diamond Articles
Questioning whether your diamond is real or fake? You may have been gifted or have inherited a stone and not know how it was acquired. If you are unsure, try our three easy tests you can carry out at home to verify whether your stone is in fact a diamond or not.

how to spot a fake diamond

Our gemologists have shared their top tips for spotting a fake diamond. However, it is always recommended to have a GIA trained gemologist examine any stones you are unsure about. Why? An important distinction a gemologist will be able make beyond whether your diamond is real or not, is the type of diamond you have and the quality of the diamond.



After establishing whether your diamond is real or fake, a trained gemologist will also establish what kind of diamond you own. This could be a:

  1. Natural diamond

  2. Treated diamond

  3. Synthetic diamond

While these will all look the same to the naked eye, they are in fact very different and not of the same value:

1. Natural diamonds:

  • Definition of natural diamond: a diamond mined from the Earth.
  • Value of a natural diamond: resale value of a natural diamond typically 25%-40% of what is what is was purchased for at retail.

2. Treated diamonds:

  • Definition of a treated diamond: a diamond that has undergone a treatment of some description to enhance either the color or clarity of the stone.
  • Value of a treated diamond: treated diamonds are typically worth half the amount of natural, non treated diamonds.

3. Synthetic diamonds:

  • Definition of a synthetic diamond: a diamond that was man-made, i.e. created in a laboratory and not mined from the Earth.
  • Value of a synthetic diamond: synthetic diamonds are typically worth half the amount of natural, non treated diamonds.

A gemologist can also ascertain the quality of the diamond which will help establish it’s worth.



When a gemologist analyzes a diamond, they will establish the 4 C’s of the stone. These are:

  1. Carat weight

    The weight of the diamond measured in carats (ct). The larger the carat size, the more valuable the stone. You can also calculate your diamonds’ carat weight by using our online diamond calculator.

  2. Color grade

    This measures how much yellow there is in the stone. Color grades range from D (colorless) -Z (faint yellow). The less color in the diamond, the more valuable it is.

  3. Clarity grade

    This is an indicator as to how flawed the stone is but internally and externally. Note that most flaws cannot be seen by the naked eye, so although a diamond may seem flawless, this is most likely not the case as flawless diamonds are very rare. And therefore very valuable.

  4. Cut grade

    This refers to how well a diamond was cut and the overall proportions of the stone. A well cut diamond emits light more effectively and creates the sparkle that diamond are known for.

These 4 C’s will play a pivotal role in establishing how much your diamond is worth. Professional diamond buyers will take these characteristics into account to calculate the value of your stone on the secondhand market.



At WP Diamonds, we have a team of GIA trained gemologists on hand to value your diamond and provide you with a price. We offer a professional, safe and easy way to sell your diamond and get paid in as little as 24 hours from filling out our online form. With an A+ BBB rating, our service is free of charge and there is no obligation to sell. You can either schedule an appointment or fill out our online form to receive a price quote. To find out how much you could sell your diamond for, simply click the button below.

Bio: Written by one of our diamond, designer jewelry or luxury watch experts. With over 150 years of combined experience, our experts are able to comment on trends, share industry knowledge and provide diamond, designer jewelry and luxury watch education.

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