Do lab grown diamonds have flaws?

Do lab grown diamonds have flaws

Lab-grown diamonds, like natural diamonds, can have flaws or imperfections, but the nature and prevalence of these flaws may differ. Here’s an explanation of the types of flaws in lab-grown diamonds and how they compare to those in natural diamonds:

Inclusions and Blemishes:

  • Inclusions: These are internal flaws or imperfections within the diamond. In lab-grown diamonds, inclusions can occur during the growth process. They are often referred to as “synthetic inclusions” and can include tiny mineral particles or gas bubbles.
  • Blemishes: Blemishes are surface imperfections on the diamond. In lab-grown diamonds, blemishes can result from the cutting and polishing process. They may include scratches, pits, or nicks.

Grading and Identification:

  • Both natural and lab-grown diamonds are graded for quality by organizations like the Gemological Institute of America (GIA). Flaws, including inclusions and blemishes, are assessed as part of the grading process.
  • Gemologists use various tools, such as microscopes and specialized lighting, to identify and evaluate these flaws in both types of diamonds.

Differences in Flaws:

  • Lab-grown diamonds often have fewer inclusions and blemishes compared to natural diamonds. This is because the growth process in a controlled environment can minimize the introduction of impurities.
  • Inclusions in lab-grown diamonds can sometimes be different from those in natural diamonds. For instance, synthetic inclusions may have unique features that distinguish them from natural inclusions.

Impact on Value:

  • Flaws can affect the value and price of both natural and lab-grown diamonds. Diamonds with fewer or less visible flaws are typically considered more valuable.
  • Lab-grown diamonds are generally more affordable than natural diamonds of similar quality, partly because they often have fewer flaws. However, the price still depends on various factors like size, color, and cut.


  • Some lab-grown diamonds may undergo post-growth treatments to improve their clarity by removing or reducing inclusions. These treatments are analogous to enhancements applied to natural diamonds.

In summary, lab-grown diamonds can have flaws, including inclusions and blemishes, similar to natural diamonds. However, due to the controlled growth process, lab-grown diamonds often have fewer and less severe flaws. These flaws are assessed and graded just like natural diamonds, and they can affect the diamond’s value and quality.