What Is a Lab-Created Diamond? Your Complete Guide

Most people shopping for an engagement ring spend weeks debating one question without a solid answer: is a lab-created diamond a real diamond? The short answer is yes, and the longer answer is why that matters for your budget, your values, and the ring you actually want. Lab-created diamonds are chemically, physically, and optically identical to mined diamonds, yet they typically cost 50 to 80 percent less. At Livia Diamonds, we have spent over 20 years helping couples in Toronto and across Canada navigate exactly this decision, and the confusion we see every week is entirely avoidable once you understand the facts.

Table of Contents

• Quick Takeaways
• What Is a Lab-Created Diamond?
• How Lab-Created Diamonds Are Made
• Lab-Created vs. Mined Diamonds: Real Differences
• Lab-Created Diamond vs. Moissanite: Which One Should You Choose?
• Grading and Certification for Lab-Created Diamonds
• Cost and Value: What You Are Actually Paying For
• Buying a Lab-Grown Diamond in Canada
• Common Mistakes Buyers Make
• Quick Comparison: Lab Diamond, Mined Diamond, Moissanite
• Frequently Asked Questions
• References

Quick Takeaways

What Is a Lab-Created Diamond?

A lab-created diamond is a diamond grown in a controlled scientific environment rather than extracted from the earth. It is not a simulant, not cubic zirconia, and not glass. It is a genuine diamond composed of pure carbon atoms arranged in the same cubic crystal lattice that gives natural diamonds their legendary hardness and brilliance.

The Federal Trade Commission updated its definition of a diamond in 2018 to remove the word "natural," explicitly recognizing that lab-created diamonds meet the scientific definition of a diamond. This matters because some retailers still use language that implies otherwise, which is misleading and, in the FTC's view, potentially deceptive.

When a gemologist examines a lab-created diamond and a mined diamond side by side, they cannot distinguish them visually. Only specialized equipment that detects microscopic growth patterns can differentiate the two, and reputable labs note this on the certificate. The stone on your finger looks, sparkles, and wears identically to any mined diamond of the same grade.

How Lab-Created Diamonds Are Made

Understanding how a synthetic diamond is produced helps demystify the technology and explains why the quality is so consistent. There are two established methods, and both are used commercially at scale.

HPHT: High Pressure High Temperature

HPHT replicates the conditions deep within the earth where natural diamonds form. A small diamond seed is placed in carbon material and subjected to pressures exceeding 1.5 million pounds per square inch and temperatures above 1,400 degrees Celsius. The carbon melts and crystallizes around the seed, forming a rough diamond over several weeks.

HPHT is the older of the two methods and tends to produce stones with a slightly yellowish or bluish tint depending on the trace elements present. High-quality HPHT diamonds are still entirely gem-grade and used in fine jewelry.

CVD: Chemical Vapor Deposition

CVD is the method that has driven dramatic quality improvements in recent years. A diamond seed is placed in a chamber filled with carbon-rich gas, typically methane. The gas is ionized into plasma at temperatures around 800 degrees Celsius, and carbon atoms precipitate onto the seed layer by layer, growing a diamond over several weeks.

CVD diamonds tend to have excellent color consistency and are less likely to show the strain patterns associated with HPHT. Most premium lab-grown diamond jewelry sold today, including the stones at Livia Diamonds, uses CVD-grown stones graded D through G in color.

Pro tip: When you ask a retailer about their lab diamonds, ask which growth method was used and request the IGI or GIA certificate number so you can verify the grade independently at the lab's website before you buy.

Lab-Created vs. Mined Diamonds: Real Differences

The chemistry is identical. The differences that actually affect your purchase are price, supply chain origin, and resale market behavior. Here is what the data shows without softening the message.

Price Gap

A 1-carat, round brilliant, VS1, G-color mined diamond from a major retailer typically retails for $5,000 to $8,000 Canadian. The same specification in a lab-created stone runs $1,200 to $2,500 Canadian. That gap allows couples to either save money or upgrade significantly, choosing a 2-carat lab diamond for roughly the price of a 1-carat mined stone.

Environmental Footprint

Diamond mining moves enormous volumes of earth. A single carat of mined diamond disturbs an estimated 250 tons of earth and uses significant quantities of water and diesel fuel. Lab-created diamonds use electricity, and while the carbon footprint depends on the energy source, a facility running on renewable power produces dramatically lower emissions than a conventional mine. This is not a theoretical difference; it is a measurable one that auditors have quantified.

Resale Value

Mined diamonds lose 20 to 50 percent of retail value the moment you walk out of the store. Lab-created diamonds have lost resale value more steeply as supply has grown. In practice, neither is a good investment vehicle. If you are buying an engagement ring as a financial asset, neither diamond type will serve you well. If you are buying it to wear and love for decades, this distinction matters far less than retailers would have you believe.

"A diamond's value to its wearer has never come from its resale price. It comes from what it represents."
Livia Diamonds, customer consultation notes, Toronto

Lab-Created Diamond vs. Moissanite: Which One Should You Choose?

Livia Diamonds carries both lab-created diamonds and moissanite, and we get this question every single week. The honest answer is that they are not the same stone, and the right choice depends entirely on your priorities.

What Moissanite Actually Is

Moissanite is silicon carbide, not carbon. It was first discovered in a meteorite crater in 1893 by Henri Moissan. Today, virtually all jewelry-grade moissanite is lab-created because natural moissanite is extraordinarily rare. It has a Mohs hardness of 9.25, making it the second hardest gemstone used in jewelry after diamond.

Key Differences in Practice

Moissanite has a higher refractive index than diamond, meaning it produces more fire (the rainbow flashes of light). Some people love this; others find it looks "too sparkly" or artificial in larger sizes. Diamond has a more subdued, brilliant white light return that most people associate with traditional fine jewelry.

Moissanite is significantly less expensive than even lab-created diamonds. A 1-carat equivalent moissanite stone typically costs $300 to $600, compared to $1,200 to $2,500 for a 1-carat lab diamond. If budget is the primary constraint, moissanite delivers outstanding beauty at a fraction of the cost.

A common mistake is assuming moissanite looks fake. A high-quality moissanite in a well-designed setting looks genuinely beautiful and passes casual visual inspection from anyone who is not a trained gemologist with a loupe. The fire difference is visible in direct sunlight but subtle in indoor lighting.

Grading and Certification for Lab-Created Diamonds

The grading system for lab-created diamonds is the same 4Cs framework applied to mined diamonds: Cut, Color, Clarity, and Carat weight. Do not let anyone tell you otherwise or imply that lab diamonds use a different or inferior scale.

Which Certification Bodies Matter

The two most respected labs for lab-created diamond certification are IGI (International Gemological Institute) and GIA (Gemological Institute of America). IGI has become the dominant certifier for lab diamonds because it invested in lab-diamond grading infrastructure earlier and at larger scale. GIA certifies lab diamonds but historically used a different report format; as of 2023, GIA has expanded its grading reports for lab diamonds to mirror its natural diamond reports more closely.

At Livia Diamonds, every lab diamond we sell comes with an IGI certificate. We recommend buyers avoid any retailer who cannot produce a third-party certificate from IGI or GIA. Self-graded stones are a red flag.

What to Look for on a Certificate

Check that the certificate notes the growth method (HPHT or CVD), the laser inscription on the girdle matches the certificate number, and the 4Cs grades are clearly stated. A VS2 clarity, G color, Excellent cut lab diamond is an outstanding choice for engagement ring use and represents strong value at any budget level.

Pro tip: For a 1-carat round brilliant, prioritize cut grade above everything else. An Excellent or Triple Excellent cut in a G, VS2 will outperform a D, IF stone with a Very Good cut in visual brilliance every single time.

Cost and Value: What You Are Actually Paying For

The price of a mined diamond includes mining infrastructure, royalties, multi-tiered distribution markups, and the artificial supply management that the diamond industry has historically used to maintain price floors. You are not paying for rarity in any geological sense. Diamonds are not rare; they are supply-managed.

Lab-created diamonds remove most of that chain. The stone is grown, cut, polished, graded, and sold. The result is a dramatically lower retail price for an identical product. According to data from the diamond industry research firm Edahn Golan Diamond Research and Data, lab diamond prices have fallen roughly 80 percent since 2016 as production efficiency improved.

For a Canadian buyer, the practical implication is significant. A $5,000 budget that might buy a 0.8-carat mined diamond with compromise on quality will buy a 2-carat lab-created diamond with top-tier cut and very good color and clarity. That is not a marginal improvement; it is a fundamentally different ring.

Buying a Lab-Grown Diamond in Canada

The lab grown diamond Canada market has matured considerably over the past five years. Canadian buyers now have access to certified stones and custom settings without paying the downtown-Toronto retail premium, particularly through retailers like Livia Diamonds who operate both in-person and online.

What to Expect from the Buying Process

A good retailer will walk you through stone selection based on your budget and priorities, not push you toward the most expensive option. At Livia Diamonds, virtual consultations are available for customers across Canada who cannot visit the Toronto location in person. This matters because a 15-minute conversation with someone who knows the product saves weeks of online confusion.

Custom Design vs. Ready-to-Ship Rings

Both options have merit. Ready-to-ship rings are faster and slightly less expensive because the design and production overhead is spread across volume. Custom design allows you to specify every element, from the exact stone dimensions to the band profile and metal type, which is the right choice if you have a specific vision or unusual ring size requirements.

Livia Diamonds offers both, along with free shipping, free returns, and flexible payment plans that make lab-created diamond engagement rings genuinely accessible without requiring a lump-sum purchase. These are not gimmicks; they reflect the cost savings that come from not operating a traditional retail environment with its associated overhead.

Common Mistakes Buyers Make

After two decades of consultations, certain patterns repeat themselves. Here are the errors that cost buyers money or satisfaction, stated directly.

Buying based on carat weight alone is the most common mistake. Carat is a weight measurement, not a size measurement, and a poorly cut 1.5-carat stone looks smaller and duller than a well-cut 1-carat stone. Cut quality is the single most important factor in how a diamond looks.

Ignoring certification is the second most common mistake. Any retailer who cannot produce an IGI or GIA certificate for a lab-created diamond is selling you an unverified stone. Do not accept the retailer's own grading. Third-party certification is not optional for a purchase of this size.

Assuming all lab diamonds look the same is another error. There is real variation in cut quality, fluorescence, and clarity within the lab-diamond market. Two D-color, VVS1 stones can look dramatically different if one has an Excellent cut and the other has a Good cut. Always ask for the cut grade on the certificate.

Finally, many buyers overlook the setting in their research. A beautiful stone in a poorly made setting will look mediocre. Ask about metal quality (14K vs. 18K gold, or platinum), prong construction, and whether the setting is cast or hand-fabricated. At Livia Diamonds, all pieces are handcrafted, which directly affects durability and finish quality.

Quick Comparison: Lab Diamond, Mined Diamond, Moissanite

Frequently Asked Questions

Are lab-created diamonds considered real diamonds?

Yes, lab-created diamonds are real diamonds by every scientific and legal definition. The FTC confirmed this in its 2018 updated guidelines. They are composed of pure crystalline carbon, have a Mohs hardness of 10, and are optically identical to mined diamonds. The only distinction is their origin.

What is a lab diamond worth compared to a mined diamond?

Lab-created diamonds retail for 50 to 80 percent less than mined diamonds of the same grade. A 1-carat, VS1, G-color lab diamond in Canada typically costs $1,200 to $2,500 CAD versus $5,000 to $8,000 CAD for a comparable mined stone. However, resale value for lab diamonds is currently lower than for mined diamonds, so they are best understood as a purchase for wearing, not investing.

Can a jeweler tell if a diamond is lab-created?

Not with the naked eye. A trained gemologist with standard loupe magnification cannot visually distinguish a lab-created diamond from a mined diamond. Specialized equipment that measures trace element signatures and growth patterns can identify lab diamonds, and responsible labs note the origin on the certificate. This is not a defect; it is simply a record of origin.

Is moissanite better than a lab-created diamond?

Neither is objectively better; they serve different priorities. Moissanite costs significantly less and has more fire (rainbow sparkle), while lab-created diamonds have identical properties to mined diamonds and appeal to buyers who want the specific look and status of a diamond. If your primary goal is maximum visual impact per dollar, moissanite is strong. If you want a diamond, a lab-created diamond gives you that at a fraction of the mined-diamond price.

How do I buy a lab-grown diamond in Canada?

Look for a Canadian retailer who provides IGI or GIA certification with every stone, offers transparent pricing, and has knowledgeable staff available for consultation. Livia Diamonds offers both in-person appointments at their Toronto location and virtual consultations for customers across Canada, with free shipping and returns included. Always request the certificate number and verify it on the grading lab's website before completing any purchase.

Does a lab-created diamond look different from a mined diamond in a ring?

No, it does not. The visual properties are identical. The same 4Cs that determine beauty in a mined diamond determine beauty in a lab diamond. A well-cut lab diamond in a good setting is indistinguishable from a mined diamond to anyone looking at the ring, including other jewelers.

Are synthetic diamonds a good choice for engagement rings?

Yes, and the term "synthetic diamond" is simply an industry descriptor for lab-created origin, not an indicator of lower quality. For engagement rings specifically, lab-created diamonds offer the same durability, brilliance, and appearance as mined diamonds while freeing up significant budget for the setting, wedding bands, honeymoon, or down payment. In practice, most couples who switch to lab diamonds are glad they did.

Have you already decided between a lab-created diamond and moissanite, or are you still weighing the options? Share your experience or your biggest question in the comments and we will give you a direct answer.

References

• Federal Trade Commission official site, where you can find the updated jewelry guidelines that formally recognize lab-created diamonds as real diamonds

• Gemological Institute of America, where you can verify diamond grading standards and look up certified stone reports for both lab-created and mined diamonds

• Forbes, where you can find editorial coverage of the lab-grown diamond market, pricing trends, and consumer guidance for buying diamond jewelry

• Statista, where you can access data and market research on the global lab-grown diamond industry and consumer adoption trends

• Natural Resources Canada, where you can find government data on Canadian diamond mining and the environmental footprint of mineral extraction in Canada