Do Lab-Grown Diamonds Pass the Diamond Test? A Scientific Investigation

Lab-grown diamonds, also known as synthetic ones, are becoming increasingly popular in the jewelry industry. They are created in a laboratory, using advanced technological processes that mimic the conditions that produce natural diamonds deep within the earth. As a result, they have the same physical, chemical, and optical properties as natural ones. However, there is still a debate on whether they pass the diamond test, a scientific method used to distinguish between real and fake pieces. In this blog post, we will explore the research conducted on them to determine if they pass the test and the ethical considerations in choosing between lab-grown and natural ones.

The Diamond Test and Its Use

This test is a standard procedure used to distinguish between real and fake diamonds. The test involves using a device called a diamond tester, which measures the thermal conductivity of the gemstone. Natural ones have high thermal conductivity, which means they disperse heat quickly, while fake ones do not. Therefore, if this tester detects high thermal conductivity, it confirms that the diamond is real.

Differences Between Lab-Grown and Natural Diamonds

Natural diamonds are formed deep within the earth’s mantle, where high temperatures and pressures cause carbon atoms to crystallize over millions of years. Lab-grown ones, on the other hand, are produced in a laboratory, using either high pressure and high-temperature (HPHT) or chemical vapor deposition (CVD) methods.

The main difference between these two is their origin. While natural ones are formed by geological processes, lab-grown ones are considered man made diamonds. However, they have the same physical, chemical, and optical properties as natural ones, making them virtually indistinguishable from them.

Research and Experiments on Lab-Grown Diamonds

Several studies have been conducted to determine if lab-grown diamonds pass the test. The results have been promising, as most of them do pass the test. In fact, they often score better than their natural rivals in thermal conductivity tests due to the lack of impurities and defects that are present in natural ones.

One study conducted by the International Gemological Institute (IGI) found that 100% of them passed the diamond test. Another study conducted by the Gemological Institute of America (GIA) found that 98% of them passed the test, with the remaining 2% having lower thermal conductivity due to defects or impurities.

The Importance of the Diamond Industry and Its Impact on Lab-Grown Diamonds

The diamond industry is a massive global industry, with an estimated worth of $80 billion. The industry employs millions of people worldwide and has a significant impact on the economies of many countries. The rise of lab-grown diamonds has disrupted the industry and has sparked debates about the future of their natural opponents.

Advantages and Disadvantages of Lab-Grown Diamonds Compared to Natural Diamonds

Lab-grown diamonds offer several advantages over natural ones. 

– First, they are more environmentally friendly because they do not require mining, which can have a negative impact on the environment. 

– Second, they are often less expensive than natural ones, making them more accessible to a wider range of consumers. 

– Third, they are guaranteed to be conflict-free, as they are not associated with any unethical mining practices.

However, they also have some disadvantages. 

– First, they lack the sentimental value that natural ones have because they are man-made. 

– Second, they do not have the same rarity as natural ones, which can affect their perceived value. 

– Third, they are a relatively new concept, and some consumers may still prefer natural ones because of their established reputation and cultural significance.

Ethical Considerations in Choosing Between Lab-Grown and Natural Diamonds

One of the most significant ethical considerations when choosing between these two is the issue of conflict diamonds, also known as blood ones. This means that they are mined in war zones and sold to finance armed conflict against governments. They are often associated with human rights abuses and have contributed to the funding of wars in Africa.

Lab-grown diamonds are guaranteed to be conflict-free because they are not associated with any unethical mining practices. Therefore, choosing them over natural ones can be a more ethical choice for consumers who are concerned about human rights issues.

Consumer Perception and Acceptance of Lab-Grown Diamonds


Consumer perception and acceptance of lab-grown diamonds have been positive in recent years. According to a survey conducted by MVI Marketing, 66% of consumers are interested in buying them, with 23% of consumers considering them as their first choice. To address this, some jewelry companies have started using the term “cultured diamonds” instead of “lab-growns” to give them a more natural connotation.

However, some consumers still prefer natural ones because of their established reputation and cultural significance. 

The Future of Lab-Grown Diamonds in the Jewelry Industry

The future of lab-grown diamonds in the jewelry industry looks promising. According to a report by Allied Market Research, the global lab-grown market is expected to reach $27.6 billion by the end of 2024, growing at a compound annual growth rate of 7.4% from 2017 to 2024.

Many jewelry companies have already started incorporating them into their collections, and some have even stopped selling natural ones altogether. The rise of lab-grown diamonds has disrupted the diamond industry and has forced traditional companies to adapt to the changing market.

Conclusion and Final Thoughts on Lab-Grown Diamonds and the Diamond Test

In conclusion, lab-grown diamonds have the same physical, chemical, and optical properties as natural ones. They offer several advantages over natural diamonds, including being more environmentally friendly, less expensive, and guaranteed to be conflict-free. However, they also have some disadvantages, including lacking sentimental value and rarity.

Choosing between these two options comes down to personal preference and ethical considerations. With the rise of lab-grown pieces, consumers now have more options when it comes to buying diamond jewelry.

As the jewelry industry continues to evolve, it will be interesting to see how the popularity of lab-grown diamonds affects the industry as a whole. The future looks promising for them, and they may even become the new standard in the jewelry industry in the years to come.