Are Lab Grown Diamonds Real?

If you've ever wondered, “Are lab-grown diamonds real diamonds?” or heard the phrase "lab-created diamond" thrown around, you’re not alone. This topic sparks a lot of curiosity—and sometimes confusion. As lab-grown diamonds continue to rise in popularity, understanding what they are (and what they’re not) is important for anyone in the market for fine jewelry. Let’s explore what makes a diamond a diamond, whether grown in a lab or mined from the earth.

Are Lab-Grown Diamonds Considered Real?

The short answer is yes. Lab-grown diamonds are real diamonds. Chemically, physically, and optically, they are identical to mined diamonds. A lab-created diamond undergoes the same crystallization process, using either High-Pressure High-Temperature (HPHT) or Chemical Vapor Deposition (CVD) methods. 

The HPHT technique closely replicates the conditions found deep within the earth where natural diamonds form. These conditions exist when both temperature and pressure are very high–a combination of conditions that was not easy for humans to replicate in machinery for many years. While the HPHT method was first developed in 1953 and introduced to the world by GE in 1954, the equipment itself, in addition to its upkeep and running costs, were so high that the diamonds produced were far more expensive than the mining process. It wasn’t until the 2010s that HPHT diamonds had a marketable “place” in the jewelry world.

The CVD technique of growing synthetic diamonds is more recent, and while it technically replicates an earth-based process, it is a very, very tiny percentage of natural diamonds that are formed by this technique. Since the CVD technique involves using gases bearing carbon, and needs to be done with the utmost of a closed system, it took many more years for this technique of growing diamonds to come on-line in a practical way.

So when someone asks, "Are lab diamonds real?"—they are indeed. They sparkle just like mined diamonds, have the same chemical makeup (pure carbon with a cubic crystal strructure), and are graded the same way by gemological laboratories like GIA (Gemological Institute of America) and IGI (International Gemological Institute).

Are Lab Diamonds the Same as Real Diamonds?

This is where things can get a bit nuanced. When people say "real diamonds," they often mean natural diamonds—those formed underground over billions of years. However, lab-grown diamonds are the same in every measurable way as mined diamonds. They have the same hardness (a 10 on the Mohs scale), the same brilliance, and the same refractive index.

So, whether you’re buying a lab-grown or mined diamond, it’s still a diamond. But it’s worth noting that some people value the natural aspect of mined stones. In the same way some prefer a natural pearl over a cultured one, some buyers prioritize the rarity and symbolism associated with earth-mined diamonds.

A big difference between lab-grown diamonds and natural diamonds is price. Bringing a newly mined diamond to market is a much costlier endeavor than bringing a new lab-grown diamond to market. Once the diamond synthesis processes became more affordable than extraction processes, a plethora of diamond-growing labs began popping up, particularly on mainland China. As more and more labs came online, the diamond market became flooded with lab-grown diamonds. The laws of supply and demand have resulted in lab-grown diamonds steadily dropping in price since about 2014, with the greatest decline happening since 2021.

Will lab-grown diamonds ever bottom out in price? At some point, yes. But we don’t really know when that will happen. At the end of the day, the price for the vast amount of energy required to run HPHT and CVD machinery will not go down, nor will the labor to cut the lab-grown diamond rough into gems.

Can a Jeweler Tell if a Diamond Is Lab Created?

Jewelers cannot tell the difference between a lab-grown and a mined diamond just by looking at it with the naked eye. It’s common, however, for lab-grown diamonds to come with inscriptions on the girdle (the thin outer edge of the diamond) indicating their origin. These inscriptions are invisible to the naked eye but can be seen under magnification. 

Of course, since a laser inscription can be removed, a professional jeweler should gemologically double-check every diamond they buy and sell, to make sure that an end consumer is getting exactly what they want.

No technology for separating lab-grown diamonds from natural diamonds is 100% determinative. Therefore, a good jeweler will have more than one type of identification tool, each relying on a different technology. Tools like spectroscopic analysis machines or fluorescence testers are commonly used in combination, thus giving the end consumer the final assurance.

Will Lab Diamonds Pass a Diamond Tester?

Yes, lab-grown diamonds will pass a diamond test on a traditional diamond tester that is simply trying to separate diamonds from CZ, glass, moissanite, or other simulants. Traditional diamond testers measure a material's ability to conduct heat, which lab-grown diamonds do just as well as mined ones. Since they’re both composed of carbon, the heat conductivity is identical. This means that if you use a standard tester, a lab diamond will test positive as a diamond.

However, some newer testers have additional functions to detect lab-grown diamonds by analyzing their fluorescence patterns or growth structures. So while lab-grown diamonds will pass older heat-based testers, more advanced testers may detect that the diamond is lab-created. And once again, as a double-check, a secondary tester should be used to confirm what the first testing protocol determined.

Are Lab-Grown Diamonds Worth Buying?

1. Price Advantage | Lab-grown diamonds are currently 30-90% less expensive than mined diamonds of the same quality. This means you can get a larger or higher-quality diamond within your budget.
2. 
   Sustainability | Eco-conscious buyers–BEWARE! Lab-grown diamonds are often touted for being “greener” than mined diamonds. This is actually a very fraught topic. It’s true that lab-grown diamonds do not disturb the earth, as extractive mining does. However, the carbon footprint of lab-grown diamonds is vast. The HPHT process is more of an energy suck than the CVD process. Really, one of the disadvantages of lab-grown diamonds is that they are not very eco-conscious, ultimately. The most eco-conscious diamond you can buy is an upcycled natural one, with no new mining done to produce the stone, and no vast energy outlay was involved in bringing it to market. 
3. Ethical Considerations | Lab-grown diamonds eliminate concerns about conflict diamonds (also known as blood diamonds). That said, most reputable jewelers do not have conflict diamonds in their inventory, or would even know where to get one. The Kimberley Process all but eliminated conflict diamonds from the supply, so this is also a bit of a “false flag” that diamonds labs promote. Once again, an upcycled natural diamond predating 1990 is the most conflict-free diamond you can find today. Read more on Conflict-Free Diamonds 
4. Customization and Availability | Because lab-grown diamonds can be produced on demand, there is a larger variety of sizes and shapes readily available, making them a favorite for custom jewelry designs.

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What Are the Disadvantages of Lab-Grown Diamonds?

1. 
   Lower Resale Value | One of the main disadvantages is the resale value. Mined diamonds tend to hold more value over time, while lab-grown diamonds usually depreciate faster. If you’re looking at your purchase as an investment, mined diamonds may be a better option.
2. Perceived Value | Some people place a sentimental or symbolic value on mined diamonds, viewing them as more special or “authentic” due to their natural origin. This cultural or emotional attachment might be important if you’re purchasing a diamond for an engagement ring or another significant occasion.
3. Innovation Outpacing Demand | Lab-grown technology is rapidly advancing, which may make today’s diamonds cheaper in the future. There is a chance that the market for lab-grown diamonds could become oversaturated, further driving down resale value.
4. Environmental Impact | Although lab diamonds are more sustainable than mined ones, they are not without environmental impact. The energy required for production—particularly in HPHT processes—can still be significant if it relies on non-renewable energy sources.
5. Future Value | Much like when rubies were first synthesized over 100 years ago, lab-grown diamonds started off being more expensive than natural ones. The price has tumbled a lot–and the value of the lab-grown diamond you buy today could very well decline over time.  

Lab-Grown vs. Mined Diamonds | Which Should You Choose?

• If cost is a top concern and you want a larger or higher-quality stone for your budget, a lab-grown diamond is a great choice.
• If sustainability and ethical sourcing are important to you, a lab-grown diamond offers a small bit of peace of mind–but not as much as an upcycled natural diamond will.
• 
  However, if you’re looking for a diamond that might hold more value over time or carries emotional significance for you, a mined diamond might be more fitting.

It’s also worth considering the event or purpose for which you’re buying the diamond. For engagement rings, some buyers prefer mined diamonds because they symbolize something unique and irreplaceable. On the other hand, lab-grown diamonds are often the go-to for anniversary gifts, fashion jewelry, or custom pieces where sustainability or affordability is a priority.

So, Are Lab-Grown Diamonds Real?

To sum it up: Yes, lab-grown diamonds are absolutely real diamonds. They are chemically, physically, and visually indistinguishable from mined diamonds. Whether you call them “lab-created diamonds,” “synthetic diamonds,” or just “lab diamonds,” they hold the same brilliance and durability as any diamond pulled from the earth.

When buying a diamond, the decision between a lab-grown and mined stone is a personal one. Both have their unique advantages, and there is no right or wrong answer—it all depends on what matters most to you.

So, if you’ve been asking yourself, “Are lab grown diamonds the same as real diamonds?” or wondering about their durability, you can rest assured that they are just as strong, sparkly, and stunning as their mined counterparts. Whether you choose a lab-grown or mined diamond, the most important thing is that you find a piece that resonates with your style, budget, and values.

Final Thoughts on Lab Grown Diamonds

Lab-grown diamonds have changed the way we think about fine jewelry. They offer a modern alternative that aligns with both ethical and financial priorities, without sacrificing the qualities we love about diamonds—beauty, durability, and brilliance.

Now that you know the answer to "Are lab grown diamonds as strong as real diamonds?" and other burning questions, you’re equipped to make an informed choice. Whether you're shopping for an engagement ring, an anniversary gift, or a statement piece, lab-grown diamonds deserve serious consideration.

Excellent Sources of Reliable Information on Lab Grown Diamonds

1. Gemological Institute of America (GIA) |  The GIA is one of the world’s leading authorities on diamonds and gemstones, setting global standards for gemstone grading. They conduct scientific research and offer certifications, making them a trusted source for detailed, unbiased information on lab-grown diamonds.Here is an article from the GIA that explains how lab-grown diamonds are chemically identical to natural diamonds but differ in growth processes.
2. International Gem Society (IGS) | The IGS provides extensive educational resources on gemstones and diamonds. They publish guides on the nuances of clarity, inclusions, and value, helping consumers differentiate between lab-grown and natural stones. Here is an article on the history of lab-grown diamonds.
3. Gem Certification & Assurance Lab (GCAL) | GCAL is a respected gemological laboratory known for its thorough and accurate grading practices for both natural and lab-grown diamonds. Founded in New York, GCAL maintains a reputation for high precision and consumer trust. Here is an article on natural diamond verification and lab grown diamond detection.
4. International Gemological Institute (IGI) | The IGI is a leading gemological lab, providing certification for both lab-grown and mined diamonds.Their grading reports offer transparency and trust in the quality of diamonds. Here is their online consumer education center.
5. The Journal of Gems and Gemmology (JGG) | JGG is a reputable source of scholarly research focused on the scientific study of gemstones, including natural and lab-grown diamonds. This peer-reviewed publication offers in-depth research articles on topics like gem identification, treatment methods, and the latest advances in gem synthesis, such as the chemical vapor deposition (CVD) and high-pressure, high-temperature (HPHT) processes used for lab-grown diamonds. JGG's content is authored by experts in gemology, chemistry, and mineralogy. Progress in Synthesis and Analysis of Lab-Grown Diamond [LI Jianhua, HU Junheng, SU Panzhe, LU Jihong, ZANG Jinhao, WANG Yuchang. Progress in Synthesis and Analysis of Lab-Grown Diamond[J]. Journal of Gems & Gemmology, 2021, 23(6): 12-24. DOI: 10.15964/j.cnki.027jgg.2021.06.002}
6. A Brief Description of Identification Methods of HPHT and CVD Lab-Grown Diamonds and the Latest Market Analysis [YUAN Joe C.C., QI Lijian. A Brief Description of Identification Methods of HPHT and CVD Lab-Grown Diamonds and the Latest Market Analysis[J]. Journal of Gems & Gemmology, 2021, 23(6): 40-50. DOI: 10.15964/j.cnki.027jgg.2021.06.004]
7. The Future Star in Gems? Can Lab-Grown Diamonds Add Value to Luxury Brands? [Mihailovich Philippe, Taylor Caroline, Brunschweiger Alane. The Future Star in Gems? Can Lab-Grown Diamonds Add Value to Luxury Brands?[J]. Journal of Gems & Gemmology, 2021, 23(6): 58-73. DOI: 10.15964/j.cnki.027jgg.2021.06.006]
8. Natural Diamond Council | The Natural Diamond Council promotes natural diamonds and offers insights into the sentimental value many consumers place on mined stones. Their resources are useful for understanding the cultural context of diamond choices. Here are insights on the perceptions of natural versus lab-grown diamonds.
9. The Knot | The Knot is a popular wedding planning platform that tracks trends in engagement rings and bridal jewelry. Their coverage of lab-grown diamonds reflects changing consumer behavior in the wedding market. This article talks about engagement ring trends, including the rising popularity of lab-grown diamonds.
10. Jewelers of America (JA) | JA is a jewelry trade organization that sets standards for ethical business practices in the jewelry industry. They provide industry insights on diamond testing, grading, and consumer protection. This video offers professional perspectives on testing lab-grown diamonds and their value over time.
11. Gemlogis | Gemlogis is a manufacturer of advanced diamond testing instruments designed to help distinguish between natural diamonds and lab-grown varieties.Their devices are known for integrating patented technology with practical features like portability and multi-stone testing capability. One key reason Gemlogis is regarded as reliable is their participation in the ASSURE program, which independently tests and certifies diamond detection equipment for accuracy and industry compliance. This initiative further establishes Gemlogis as a trusted provider among jewelers and gemologists for distinguishing lab-created diamonds from natural ones. Here is a bit more about diamond screeners and testers.
12. New York Times | The New York Times is a highly respected news outlet. Their reporting on consumer trends and shifts in the diamond market offers a well-researched view on how lab-grown diamonds are changing the industry.This article highlights a company pulling carbon from the air to grow lab diamonds.
13. Business Insider | Business Insider covers the financial side of consumer goods, including the price differences between lab-grown and mined diamonds. Their analysis helps buyers understand market dynamics. | This article highlights how China is cooling on lab-grown diamond manufacturing. 
14. ABC News | ABC News is a widely trusted news outlet known for delivering timely and factual information across a range of industries, including luxury goods and jewelry. As part of a major news network, ABC News provides in-depth investigations, interviews with industry experts, and consumer-focused stories, ensuring well-rounded reporting. |  Their segments on lab-created diamonds often highlight key industry developments, including pricing dynamics, sustainability claims, and shifts in consumer preferences.
15. Popular Mechanics | Popular Mechanics is a well-established publication with a reputation for explaining complex scientific and technological concepts to the general public.Because the publication focuses on science and technology, it is a credible source for understanding how lab-grown diamonds are manufactured, how they compare to natural stones chemically and physically, and the technologies used for identification. Popular Mechanics serves as a bridge between technical expertise and consumer education, helping readers make informed decisions​
16. Phys.Org | Phys.org is a trusted platform dedicated to sharing the latest research news and scientific developments across multiple fields, including materials science, physics, and chemistry. In this article, experts explain how diamonds are grown in a lab. The platform’s reputation for thoroughly fact-checked and research-based reporting makes it a reliable source for anyone seeking to understand the intersection of science and consumer markets​.
17. Brilliant Earth | Brilliant Earth is a diamond online retailer that emphasizes ethical and sustainable jewelry, including lab-grown diamonds.Their resources address the environmental impact of both lab-grown and natural diamonds. Here is their lab-grown diamond buying guide.
18. Reputation on Reddit Threads | Community discussions often compare lab and natural diamonds, revealing nuanced consumer opinions. Go here to see where misinformation can thrive. See what folks are talking about here.