Lab-Grown vs. Natural Diamonds: Which Is Right for You?
If you’re shopping for a diamond engagement ring, wedding ring, or other piece of diamond jewelry, you’ve probably noticed that you now have two primary options: natural diamonds and lab-grown diamonds. At first glance, they can look virtually identical, and both can offer the beauty, durability, and brilliance people expect from a diamond. So what actually sets them apart?
The biggest difference is where and how they form. Natural diamonds develop deep within the Earth over extremely long periods of time, while lab-grown diamonds are created in controlled laboratory environments using advanced technology that replicates the conditions needed for diamond growth. Both are diamonds, but their origins, histories, pricing, availability, and considerations around long-term value can be quite different. Understanding those differences will help you decide which type of diamond best fits your preferences, priorities, and budget. If you’re still in the early stages of shopping, our diamond buying guide can help you understand the other factors that go into choosing a diamond.
What Is a Natural Diamond?
A natural diamond forms deep within the Earth under extremely high temperatures and pressures. Over geological periods of time, carbon atoms arrange themselves into the crystal structure that gives diamond its distinctive physical properties. Natural diamonds are eventually brought closer to the Earth’s surface through volcanic activity and recovered through mining.
Diamonds have also developed a long and influential cultural history. For much of their history, their rarity and expense made them symbols of wealth and status, and diamond jewelry was largely associated with royalty, aristocracy, and affluent consumers. Their role in engagement traditions became much more widespread in the 20th century, particularly as the modern diamond industry and its marketing campaigns helped establish the diamond engagement ring as a cultural tradition.
De Beers played a particularly significant role in this shift through its highly influential diamond marketing campaigns, including the 1947 “A Diamond Is Forever” campaign. These campaigns helped connect diamonds with romance, commitment, and marriage and contributed to the enduring popularity of the diamond engagement ring.
For a broader look at the history and significance of diamonds as a birthstone, see our guide to What Is April’s Birthstone?
Once a natural diamond is cut and polished, its beauty comes from the combination of its crystal structure and the skill of the cutter. Every natural diamond also has its own combination of characteristics, including color, clarity features, proportions, and other identifying properties.
For many diamond buyers, the natural origin of a diamond is an important part of its appeal. A natural diamond represents a geological history that began long before humans ever encountered it, making its origin part of the story behind the finished piece.
What Is a Lab-Grown Diamond?
A lab-grown diamond is a diamond created in a controlled laboratory environment rather than formed naturally within the Earth. The two primary technologies used to grow diamonds are High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). Both methods produce diamond crystals from carbon, and the resulting material has the same fundamental chemical composition and crystal structure as a natural diamond.
Lab-grown diamonds are a relatively recent addition to the jewelry market. Scientists have been working to create diamonds artificially for decades, and early laboratory-grown diamonds were primarily developed for industrial and technological applications. Advances in HPHT and CVD technology eventually made it possible to produce gem-quality diamonds in greater quantities, leading to their growing use in jewelry.
Lab-grown diamonds are therefore not diamond simulants such as cubic zirconia or moissanite. A simulant is a different material that resembles diamond, while a lab-grown diamond is actually diamond. The differences between natural and lab-grown diamonds are found primarily in their origin and growth history, including certain trace elements, crystal defects, and other microscopic characteristics that can reveal how the diamond formed.
For some buyers, that intentional origin is also part of a lab-grown diamond’s appeal. A natural diamond carries the story of something that formed over geological time, while a lab-grown diamond represents something created deliberately by people using technology and expertise. For an engagement ring, some couples find that idea particularly meaningful: a diamond created with intention can serve as a symbol of a marriage that will also be built and nurtured with intention. The meaning of the diamond ultimately comes from what it represents to the people wearing it.
Are Lab-Grown Diamonds Real Diamonds?
Yes. Lab-grown diamonds are real diamonds. They are not diamond simulants or imitation stones. Lab-grown diamonds have the same carbon-based crystal structure as natural diamonds and share the physical and optical properties that make diamond such a popular gemstone.
The distinction is their origin. A natural diamond forms through geological processes within the Earth, while a lab-grown diamond is created by humans using technology that allows diamond crystals to grow in a controlled environment.
That distinction matters when you’re shopping because a lab-grown diamond should be represented and priced as a lab-grown diamond. It does not, however, mean that you’re choosing between a diamond and a non-diamond stone.
Lab-Grown vs. Natural Diamonds: What’s the Difference?
The easiest way to understand your choices is to look at the factors that can actually affect your purchase.
| Natural Diamond | Lab-Grown Diamond | |
|---|---|---|
| Origin | Forms naturally within the Earth | Grown in a controlled laboratory environment |
| Chemical composition | Carbon | Carbon |
| Crystal structure | Diamond crystal structure | Diamond crystal structure |
| Physical properties | Diamond | Diamond |
| Optical properties | Diamond | Diamond |
| Identification | Can be identified as natural using specialized equipment | Can be identified as laboratory-grown using specialized equipment |
| 4Cs | Evaluated by carat, color, clarity, and cut | Can also be evaluated by carat, color, clarity, and cut |
| Typical price | Generally higher | Generally lower |
| Availability | Limited by natural supply | Can be produced in controlled quantities |
| Long-term value | Market value varies and should not be assumed to appreciate | Generally has a different resale market and value trajectory |
Lab-Grown vs. Natural Diamond Price
Price is one of the most noticeable differences between natural and lab-grown diamonds. Lab-grown diamonds are generally less expensive than natural diamonds of comparable size and quality characteristics. That price difference can allow a buyer to choose a larger diamond, a higher color or clarity grade, or simply spend less on the center stone.
Natural diamonds generally command higher prices because their supply is constrained by geological formation and the costs associated with recovering, processing, and bringing them to market. Lab-grown diamonds, by contrast, can be produced in controlled environments, but growing them is still a technologically intensive process that requires specialized equipment, substantial energy, controlled conditions, and skilled expertise. The difference is that laboratory production allows diamonds to be produced on a much more predictable and scalable basis than natural diamond formation and mining. If you’re interested in what happens between the international diamond market and the finished stone you see in a jewelry store, our Antwerp Diamonds in Woodbridge, VA article offers a closer look at how diamonds are sourced and selected in Antwerp.
That doesn’t mean price alone should determine which diamond you choose. A diamond engagement ring is a personal purchase, and the best value is ultimately the diamond that gives you the combination of appearance, quality, origin, and price that feels right to you.
How Much Cheaper Are Lab-Grown Diamonds?
The price difference between lab-grown and natural diamonds can be substantial, but there isn’t a single percentage that applies to every diamond. Size, shape, color, clarity, cut quality, brand, market conditions, and retailer pricing can all affect the difference.
If you’re comparing two diamonds, compare the actual specifications and overall appearance, rather than assuming that a particular percentage discount will apply.
Do Lab-Grown Diamonds Hold Their Value?
If you’re considering a diamond as a long-term purchase, you may be wondering whether it will hold its value or retain its resale value over time.
Neither natural nor lab-grown diamonds should be purchased with the expectation that they will appreciate in value. Diamond pricing and resale values are influenced by factors including the diamond’s carat weight, cut, color, clarity, shape, certification, market demand, and—particularly for natural diamonds—rarity. The price you pay at retail will not necessarily correspond to what you could receive if you later sell the diamond. Resale value can also be affected by the original purchase price, current market conditions, and where and how the diamond is sold.
Lab-grown diamonds have a particularly different value dynamic because advances in production technology and increasing supply can affect their market pricing. A lab-grown diamond that costs significantly less than a comparable natural diamond today may also have a different resale market in the future.
If you’re choosing a diamond for an engagement ring or other piece of jewelry, it generally makes more sense to focus on the qualities you value when you own and wear the diamond rather than treating either type as an investment.
If you’re interested in how a lab-grown diamond’s value can be documented for insurance or other purposes, learn more about appraising lab-grown diamonds.
How Are Natural and Lab-Grown Diamonds Different in Appearance?
To the unaided eye, a well-cut natural diamond and a well-cut lab-grown diamond can look exactly the same. Both can exhibit the brightness, fire, and scintillation associated with diamond, and visual appearance alone generally cannot tell you whether a diamond formed naturally or was grown in a laboratory.
The differences aren’t something you should expect to identify simply by looking at a loose diamond or an engagement ring with the naked eye. Specialized gemological equipment and trained professionals can identify a diamond’s origin by examining characteristics associated with its growth.
Can You Tell the Difference Between Lab-Grown and Natural Diamonds?
Not reliably by simply looking at them. Until relatively recently, identifying whether a diamond was natural or lab-grown could be extremely difficult, even for experienced professionals, without specialized equipment or other identifying information. Today, gemological laboratories use advanced testing methods to identify characteristics associated with the diamond’s growth environment.
Many lab-grown diamonds also have a microscopic laser inscription on the girdle identifying them as laboratory-grown. However, the inscription itself isn’t what determines the diamond’s origin; specialized testing can identify characteristics created during the diamond’s growth. A diamond grading report or laboratory-grown diamond report can also document the stone’s origin.
How Are Natural and Lab-Grown Diamonds Graded?
Diamond grading is the process of evaluating a diamond’s characteristics and documenting them in a grading report. The most widely recognized system uses the 4Cs—color, clarity, cut, and carat weight—to describe a diamond’s quality. These characteristics help consumers, jewelers, and other professionals communicate about diamonds using consistent terminology. GIA, the Gemological Institute of America, established the modern 4Cs system and its International Diamond Grading System, which became a widely adopted standard for evaluating diamond quality.
How Are Natural Diamonds Graded?
Natural diamonds can be submitted to independent gemological laboratories for grading. A grading report documents characteristics such as the diamond’s 4Cs, measurements, proportions, clarity characteristics, and other identifying information. GIA is perhaps the best-known gemological laboratory in the United States and is an independent nonprofit organization focused on gemological research, education, and laboratory services. Its natural diamond grading reports provide a full 4Cs assessment.
Other laboratories also grade natural diamonds, including the International Gemological Institute (IGI). IGI is a global gemological laboratory that provides reports for both natural and lab-grown diamonds. Its natural diamond reports document the 4Cs as well as other information about the stone.
How Are Lab-Grown Diamonds Graded?
Lab-grown diamonds can also be evaluated using the 4Cs, because color, clarity, cut, and carat weight describe characteristics of the diamond itself rather than how it was formed. However, the reporting system can vary between gemological laboratories. GIA recently changed the way it evaluates laboratory-grown diamonds.
Beginning October 1, 2025, GIA transitioned from its previous laboratory-grown diamond grading reports to a new assessment system using descriptive terminology rather than the traditional GIA natural-diamond grading scale. Other laboratories continue to issue detailed 4Cs grading reports for lab-grown diamonds. For example, IGI’s laboratory-grown diamond reports identify the stone as laboratory-grown and provide assessments of its carat weight, color, clarity, and cut, along with other identifying information.
Which Is Better: Lab-Grown or Natural Diamond?
There isn’t one right choice for everyone. The better option depends on which characteristics matter most to you, including budget, size, quality, origin, and long-term value.
A natural diamond may be the better fit if you value its geological origin, rarity, and history as a naturally formed gemstone. A lab-grown diamond may be the better fit if you want to maximize the size or quality you can purchase within a particular budget or simply prefer the idea of a laboratory-grown diamond.
For an engagement ring, both can make beautiful center stones. Rather than assuming one category is inherently better, compare individual diamonds based on their cut, color, clarity, carat weight, certification, price, and origin. The right choice is ultimately the diamond that best fits your priorities and the meaning you attach to your purchase.
If you’re shopping specifically for an engagement ring, our engagement ring buying guide covers the other decisions you’ll need to make, from choosing the center stone to considering the setting and overall design.
If you’re comparing specific diamonds, a knowledgeable jeweler can also help you evaluate the differences side by side and explain how each stone’s characteristics affect its appearance and price. Once you’ve chosen your diamond and jewelry, a jewelry appraisal can provide documentation of the finished piece for insurance purposes.
Ready to Choose Your Diamond?
Whether you choose a natural or lab-grown diamond, finding the right stone is only the beginning of creating a piece you’ll love wearing. Once you’ve chosen your diamond, you can pair it with a setting that reflects your personal style, whether you’re looking for a classic engagement ring, something completely custom, or a design that you won’t find anywhere else.
Have a diamond in mind but can’t find the right setting? Our custom jewelry services can help you create a piece around the diamond you’ve chosen. We can help you explore design options, select the right setting, and create a finished piece that brings your diamond and your vision together.
