Lab-Grown Diamonds: Pros & Cons, Are They Worth Buying? A Guide to Price, Quality & Value Retention
Updated: 1 day ago
The main advantage of lab-grown diamonds is the flexibility they offer when choosing diamond size, quality, and jewelry design within a given budget, while retaining the material characteristics of diamond itself. Considerations include price fluctuations, future resale, variations in quality, and the importance you or the recipient place on natural origin.
If your primary purpose is wearing, proposing, or commemorating a special occasion, lab-grown diamonds can be a worthwhile option to consider. If you particularly value the history and natural origin of a diamond, natural diamonds may also hold strong appeal. The right choice ultimately depends on your intended use, budget, and the actual quality of the diamond.
Table of Contents
1. Are Lab-Grown Diamonds Real Diamonds?
Lab-grown diamonds are diamonds grown in a controlled environment using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) technology. They share essentially the same chemical composition, crystal structure, and physical and optical properties as natural diamonds. Moissanite and cubic zirconia, by contrast, are different materials.
The two differ in their origin and growth characteristics. The distinction between natural and lab-grown diamonds cannot be reliably determined by the naked eye or a standard diamond tester alone; professional testing and grading reports are required.
For more information, refer to GIA’s explanation of natural and laboratory-grown diamonds.
2. Natural vs. Lab-Grown Diamonds: Pros & Cons at a Glance
Consideration | Lab-Grown Diamonds | Natural Diamonds |
Price & Budget | Generally lower cost for comparable specifications | Generally higher cost for comparable specifications |
Origin | Grown using technology in a controlled environment | Formed through natural geological processes |
Quality & Brilliance | Quality varies; proportions, color, and the actual stone should still be carefully assessed | Quality also varies; natural origin does not necessarily mean greater brilliance |
Design Options | Budget can be allocated more flexibly toward larger carat weights, multiple stones, or intricate designs | Greater emphasis can be placed on natural origin, individual stone characteristics, and design |
Future Resale | No assumption should be made that it can be resold at the purchase price; actual buyback terms should be reviewed | No guaranteed value retention; purchase price does not equal resale value |
Environment & Sourcing | Does not involve mining for the individual diamond, but production still requires energy | Involves mining and supply-chain considerations; specific sourcing information should be reviewed |
3. Four Key Advantages of Lab-Grown Diamonds
1. More Flexibility in Size and Quality Within the Same Budget
Lab-grown diamonds generally provide greater flexibility when allocating a jewelry budget. You may choose a larger center stone, or maintain the desired size and allocate more toward diamond quality, setting craftsmanship, or overall design.
When comparing prices, consider the diamond specifications, grading report, and complete jewelry configuration. Also confirm whether the quoted price covers the loose diamond only or includes the setting and mounting. Two diamonds of the same carat weight should not be evaluated by carat alone.
See our Lab-Grown Diamond Price Guide or browse current loose diamond prices.
2. The Optical Properties and Hardness of Diamond
Lab-grown diamonds are diamonds and, when well cut, can exhibit brightness, fire, and scintillation. However, performance varies between stones according to proportions, cut, and overall quality.
With a Mohs hardness of 10, diamond offers excellent scratch resistance and is suitable for frequently worn jewelry. Hardness does not mean that a diamond cannot be damaged; strong impact can still cause chipping, while settings and prongs should be inspected regularly.
See GIA’s Diamond Care Guide for further guidance.
3. Greater Flexibility for Larger Stones and Bespoke Designs
Within a given budget, lab-grown diamonds can provide more options for larger center stones, multi-stone jewelry, or bespoke designs requiring multiple matched diamonds.
For multi-stone jewelry, however, the overall quality depends on the consistency of size, outline, color, brilliance, and setting craftsmanship. Total carat weight alone does not determine the quality of a finished piece.
4. An Alternative to Mining for the Individual Diamond
For those who prefer an option that does not require mining for the individual diamond, lab-grown diamonds offer an alternative source.
This consideration has a specific scope: it does not mean that the entire piece of jewelry is mining-free, nor does it establish identical environmental or labor standards across all producers. The metal, manufacturing process, and other parts of the supply chain should be considered separately.
4. Disadvantages of Lab-Grown Diamonds & What to Consider Before Buying
1. Prices Can Change; Resale Value Should Not Be Assumed
Lab-grown diamond prices are influenced by supply, production technology, and market competition. The original retail price does not guarantee the same resale value in the future.
If resale or future upgrades matter to you, check whether the retailer offers a buyback or upgrade program and understand its terms. Natural diamonds likewise should not be assumed to retain or increase in value simply because they are natural.
For jewelry intended to be worn and enjoyed, consider the design, quality, craftsmanship, and services that matter to you when evaluating the purchase.
2. Natural Origin May Hold Personal Meaning
Some people value the geological history and natural origin of diamonds, while others place greater importance on appearance, wearability, and budget. Both preferences are valid.
For an engagement ring or gift, it is worth considering whether the recipient prefers a natural or lab-grown diamond. The right choice should reflect the recipient’s preferences as well as the design and budget.
3. Greater Supply Does Not Mean Every Stone Is High Quality
Lab-grown diamonds can also vary in inclusions, color, and cut. Even diamonds with similar 4C grades may look different because of variations in proportions and overall optical performance.
This is not unique to lab-grown diamonds. GIA research has documented differences in the growth, color, and treatments of lab-grown diamonds, showing why individual assessment remains important.
4. Environmental Impact Depends on Specific Production Data
Lab-grown diamonds require energy to produce, so the term “lab-grown” alone does not establish a lower carbon footprint or overall environmental impact. If environmental considerations are important, look for specific and verifiable information about production and energy sources.
Similarly, responsible sourcing cannot be determined solely by whether a diamond is natural or lab-grown. The U.S. FTC’s guidance on diamond advertising emphasizes that environmental claims should be supported by specific evidence rather than broad “eco-friendly” descriptions.
5. Who Should Consider Lab-Grown Diamonds?
If you prioritize everyday wearability, want to balance size and quality within your budget, or are interested in larger carat weights, multi-stone pieces, or bespoke designs, lab-grown diamonds are worth considering.
If you or the recipient places strong importance on natural origin, this preference should be part of the purchasing decision. If you are undecided, compare both types in person and review their pricing before deciding based on what matters most to you.
If resale is a primary consideration, understand the actual resale and buyback terms first. Neither “lab-grown” nor “natural” alone determines future resale value.
6. How to Choose a Quality Lab-Grown Diamond
Start by defining your intended use and total budget, then review the grading report alongside the actual stone. Beyond the 4Cs, consider face-up size, proportions, color, transparency, and performance under different lighting. For finished jewelry, also assess the accent stones, prongs, and metal craftsmanship.
RAGAZZA’s Premium lab-grown round diamonds must carry a GIA grading report and achieve a DAII™ score of 7.00 or above, alongside expert assessment of brightness, fire, and transparency.
DAII™ is RAGAZZA’s proprietary diamond quality assessment model, integrating 16 parameters and primarily designed for round brilliant diamonds. It serves as an additional selection standard and should be considered alongside the grading report and the actual stone. RAGAZZA’s “Premium” designation should also be understood separately from the classifications stated on a GIA report.
Fancy shapes such as pear, oval, and emerald-cut diamonds should be assessed according to their individual cutting characteristics.
For more information, read our Guide to Choosing Lab-Grown Round Diamonds or RAGAZZA’s 11-Point Quality Standards for Premium Lab-Grown Diamonds.
7. Frequently Asked Questions About Lab-Grown Diamonds
Will Lab-Grown Diamonds Become Cloudy or Lose Their Brilliance?
No. Under normal wear, lab-grown diamonds do not become cloudy simply because they are lab-grown. Dullness is more likely related to surface dirt, maintenance, or the diamond’s inherent quality.
Are Lab-Grown Diamonds Suitable for Engagement Rings?
Yes. They offer greater flexibility in balancing center-stone size, quality, and setting design. Consider the recipient’s preference for lab-grown or natural diamonds.
Does a GIA or IGI Report Mean Every Diamond Is Equally Good?
No. A grading report confirms specific characteristics, but diamonds can still differ in proportions, appearance, and overall quality. The actual stone should always be assessed.
Should I Choose the Cheapest Lab-Grown Diamond?
Not necessarily. Compare the diamond’s quality, setting, craftsmanship, and after-sales service—not price alone.
Original content by RAGAZZA Diamond. All rights reserved. No unauthorized reproduction or use.
Choose the Right Diamond for Your Needs
To compare natural and lab-grown diamonds in person and understand the differences in quality, visit our showroom information to arrange an appointment.
