Do Lab Grown Diamonds Pass A Diamond Tester?

Do Lab Grown Diamonds Pass A Diamond Tester?

Welcome to our blog post, where we explore the fascinating world of lab-grown diamonds and their ability to pass diamond tests. As the demand for sustainable and ethical alternatives to natural diamonds grows, lab-grown diamonds have become a popular choice for many. However, one question that often arises is whether these man-made gems can pass the scrutiny of a diamond tester. Join us as we delve into the intricacies of lab-grown diamonds and the various testing methods used to differentiate them from their natural counterparts.

Understanding Lab-Grown Diamonds

Lab-grown diamonds are created in a controlled environment using advanced technological processes. These gems possess the same chemical composition and physical properties as natural diamonds, making them visually and chemically identical. However, understanding the differences between lab-grown and natural diamonds is crucial in evaluating their ability to pass diamond tests. Here are a few key differences between lab-grown diamonds and natural diamonds:

Lab-Grown Diamonds:

  • Created in a controlled laboratory environment using advanced technology
  • Possess the same chemical composition and crystal structure as natural diamonds
  • Can be produced with specific colors, clarities, and sizes
  • Generally more affordable than natural diamonds
  • Free from ethical concerns associated with diamond mining
  • Availability is not dependent on natural diamond supplies
  • May exhibit growth patterns and features that are different from natural diamonds

Natural Diamonds:

  • Formed deep within the Earth's mantle over millions of years
  • Varied in color, clarity, and size based on natural geological processes
  • Rarity contributes to their high market value
  • Sought after for their natural beauty and uniqueness
  • Can have a historical or sentimental significance
  • Traditionally associated with luxury and status
  • Can exhibit natural imperfections and inclusions due to their formation process

Diamond Testing Methods

Diamond testers are widely used to determine the authenticity of diamonds. These handheld devices utilize various testing techniques, such as thermal and electrical conductivity, to assess a gem's properties. It is important to note that diamond testers are designed to identify differences between diamond and non-diamond materials, but they may not always distinguish between natural and lab-grown diamonds with absolute certainty. Here are a few diamond testing methods commonly used in the industry:

  • Thermal Conductivity Testing: Measures how efficiently a diamond conducts heat, as diamonds have high thermal conductivity compared to most simulants.
  • Electrical Conductivity Testing: Utilizes the fact that natural diamonds are generally non-conductive, while certain lab-grown diamonds may exhibit weak electrical conductivity.
  • Spectroscopy: Analyzes the light absorption and emission patterns of diamonds to identify unique spectral signatures that can differentiate lab-grown diamonds from natural ones.
  • UV Fluorescence Testing: This involves exposing diamonds to ultraviolet light to observe their fluorescence properties, as different types of diamonds can exhibit varying degrees of fluorescence.
  • Phosphorescence Testing: Examines the afterglow of a diamond under specific lighting conditions, as some lab-grown diamonds may display phosphorescent characteristics that differ from natural diamonds.
  • Diamond Certification: Involves sending diamonds to reputable gemological laboratories for comprehensive analysis, grading, and issuance of certificates that provide detailed information about a diamond's characteristics, including its origin.

Can Lab-Grown Diamonds Pass a Diamond Tester?

The ability of lab-grown diamonds to pass a diamond tester depends on several factors. While lab-grown diamonds share similar thermal conductivity properties with natural diamonds, some advanced lab-grown production techniques can alter this characteristic, making them potentially indistinguishable. Additionally, electrical conductivity can provide insights into a diamond's origin, but again, certain lab-grown diamonds may exhibit similar properties to natural diamonds.

Techniques for Distinguishing Lab-Grown Diamonds from Natural Diamonds

Gemologists employ additional testing methods to distinguish lab-grown diamonds from natural ones. Spectroscopy, for example, analyzes a diamond's unique light absorption and emission patterns, enabling experts to identify the origin of the gem. Advanced techniques like UV fluorescence and phosphorescence can also offer valuable insights into distinguishing lab-grown diamonds from natural ones.

Potential Challenges in Diamond Testing

While diamond testers and other testing methods play a crucial role in identifying diamonds, it's important to be aware of potential challenges. Some unethical practices may attempt to deceive testers by treating or enhancing diamonds to mimic natural properties. Moreover, with continuous advancements in lab-grown diamond technology, the lines between natural and lab-grown diamonds may become increasingly blurred.

Importance of Certified Diamond Grading

To ensure transparency and consumer trust, certified diamond grading plays a vital role. Reputable gemological laboratories provide certificates and reports for lab-grown diamonds, detailing their origin and characteristics. It is essential for buyers to seek out these certifications and rely on professional expertise when making purchasing decisions.


In conclusion, while lab-grown diamonds can possess properties similar to natural diamonds, the ability to pass a diamond tester is not a definitive indicator of their origin. Advanced lab-grown production techniques and the continuous evolution of testing methods present challenges in differentiating these gems. When it comes to purchasing diamonds, it is crucial to consider reputable sources, certified diamond grading, and expert advice. By doing so, consumers can make informed decisions and choose the gem that aligns with their values and desires. Explore the world of lab-grown diamonds with an open mind, and let the beauty and craftsmanship of these remarkable gems captivate you. Visit our store to design your perfect ring, explore our customization options, and experience the personalized design process with our team of experts. Schedule a creative sit-down near you and embark on a journey to discover the allure of lab-grown diamonds.