Introduction: What Is a Lab Grown Diamond
Buying a diamond today means making a real choice. Walk into any jewelry store or browse online and you will encounter two distinct options: natural diamonds and lab-grown diamonds. Both are real. Both are beautiful. But they are not the same - and understanding that difference matters before you spend your money.
The diamond industry has shifted significantly over the last decade. Lab-grown diamonds now represent a growing share of the global market and buyers are asking smarter questions. Is a lab-grown diamond as strong as a natural one? Are they worth buying? What exactly are they made of? And which one is right for you?
This guide answers all of it. No bias, no sales pitch. Just clear, factual information so you can make a confident decision.
What Is a Lab Grown Diamond?
Put simply, a lab-grown diamond is a real diamond - not a fake, not a substitute. It has the same carbon composition, the same crystal structure, the same hardness, and the same visual brilliance as a diamond pulled from the earth. The difference is only in how it got made.
Instead of forming over billions of years underground, a lab diamond is grown in a controlled environment over a matter of weeks. Two methods are used:
High Pressure High Temperature (HPHT)
HPHT replicates what happens in the Earth's mantle. A tiny diamond seed is placed in pure carbon and exposed to temperatures near 1,500°C alongside pressure exceeding 1.5 million PSI. Carbon atoms bond around the seed, and over weeks, a rough diamond takes shape. It is essentially a scaled-down version of what nature does - just a lot faster.
Chemical Vapor Deposition (CVD)
CVD takes a different approach. The diamond seed goes into a sealed chamber where carbon-rich gases are broken down at high temperatures. Carbon atoms settle onto the seed layer by layer, gradually building the crystal. This method gives growers more control over the final stone and is now the dominant production method in the industry.
Once grown, these diamonds go through the same cutting, polishing, and grading process as any mined diamond. GIA and IGI both certify them using the exact same 4 Cs scale.
One thing worth clarifying: lab-grown diamonds are sometimes called man-made diamonds, cultured diamonds, or created diamonds. All the same thing. What they are not is cubic zirconia or moissanite - those are entirely different materials that only look similar on the surface.
What Is a Natural Diamond?
A natural diamond is formed beneath the Earth's surface over an extraordinary period - anywhere from 1 billion to 3.3 billion years. It begins as carbon atoms subjected to immense heat and pressure in the Earth's mantle, roughly 100 miles below ground. Over time, those atoms bond in a crystalline structure. Eventually, volcanic eruptions bring the rough diamonds to the surface through pipe-like rock formations called kimberlites.
Natural diamonds are then mined, cut and polished before reaching consumers. The process - from formation to finished stone - is both remarkable and time-intensive, which is a significant reason for their higher cost.
Each natural diamond is unique. Trace elements, structural irregularities and growth conditions mean no two stones are identical. This rarity has long made natural diamonds a symbol of exclusivity and enduring value.
What is a natural diamond made of? A natural diamond is composed almost entirely of pure carbon atoms arranged in a cubic crystal structure called a diamond lattice. This structure is what gives diamonds their extraordinary hardness and characteristic brilliance.
Natural diamonds are graded using the 4 Cs - Cut, Color, Clarity and Carat - by labs such as the GIA or AGS. These grades determine quality, pricing and overall desirability.
Difference Between Lab Grown and Natural Diamonds
The table below presents a clear, side-by-side breakdown of the key differences:
|
Factor |
Natural Diamond |
Lab-Grown Diamond |
|
Origin |
Formed deep inside Earth over 1–3 billion years through natural volcanic activity |
Grown in a controlled laboratory in just 6–10 weeks using advanced technology |
|
Chemical Composition |
Pure carbon - 100% identical structure |
Pure carbon - 100% identical structure |
|
Hardness (Mohs Scale) |
10/10 - the hardest natural substance on Earth |
10/10 - equally hard, identical physical property |
|
Visual Appearance |
Identical - cannot be distinguished by the naked eye |
Identical - requires specialized equipment to differentiate |
|
Price |
Higher - due to mining, rarity and supply chain costs |
30–50% less expensive for equivalent carat, cut and clarity |
|
Resale Value |
Retains moderate resale value over time |
Lower resale value due to growing supply |
|
Ethical Concerns |
Risk of conflict diamonds; mining affects communities |
Traceable origin; no association with conflict mining |
|
Environmental Impact |
High - land clearing, CO₂ emissions, habitat disruption |
Lower - though energy-intensive labs still have some footprint |
|
Certification |
GIA, AGS, IGI certified |
GIA, IGI certified (GIA now grades lab diamonds too) |
|
Availability |
Limited by geological occurrence |
Unlimited production potential |
|
Best For |
Heirloom pieces, investment buyers, tradition-focused buyers |
Budget-conscious buyers, larger carat for less, eco-aware buyers |
Both types of diamonds score identically on chemical and physical tests. The differences lie in origin, cost, environmental footprint and long-term market value.
What Is a Lab Grown Diamond Called?
Lab-grown diamonds go by several names in the jewelry industry. Understanding these terms helps you shop more confidently. A lab-grown diamond may also be called:
- Man-made diamond - emphasizes human-controlled production
- Cultured diamond - draws a parallel to cultured pearls, which are grown under controlled conditions
- Synthetic diamond - a technically accurate but often misunderstood term (does not mean fake)
- Lab diamond - a shortened, commonly used informal term
- Created diamond - another industry-used name for lab-grown stones
It is important to note that terms like cubic zirconia (CZ), moissanite or white sapphire refer to diamond simulants - stones that look similar but have different chemical compositions and properties. These are not lab-grown diamonds.
The Federal Trade Commission (FTC) officially recognizes lab-grown diamonds as real diamonds, having updated its jewelry guides to remove the word "natural" as a requirement from the definition of a diamond.
What Is the Best Clarity for a Lab Grown Diamond?
The GIA clarity scale ranges from Flawless (FL) at the top to Included (I1, I2, I3) at the lower end. For lab-grown diamonds, the recommended clarity range for most buyers is VS1 to VS2 (Very Slightly Included). Here is why:
- VS1 and VS2 - Inclusions are minor and invisible to the naked eye. Excellent value for everyday wear jewelry.
- VVS1 and VVS2 (Very Very Slightly Included) - Near flawless in appearance. Ideal for high-end pieces, though the price premium may not be necessary for most buyers.
- SI1 - Slightly included; inclusions may be visible under magnification but not always to the naked eye. A practical budget option.
- FL / IF (Flawless / Internally Flawless) - Extremely rare and expensive, even in lab-grown diamonds. Unnecessary for most jewelry purposes.
For jewelry chains, necklaces and accent stones - where the diamond is smaller or part of a larger design - SI1 to VS2 is typically sufficient. For a center stone in a ring or pendant where the diamond is the focal point, VS1 or higher is the better investment.
Lab-grown diamonds also tend to have fewer inclusions than mined diamonds of the same grade because the growth environment is controlled. However, CVD diamonds can occasionally show slight brown undertones if grown too quickly and HPHT diamonds may display a subtle blue tint from excess boron - both of which are screening concerns when buying.
About Lab-Grown Diamonds (Price, Resale & Market Trends)
One of the most common questions buyers ask is whether lab-grown diamonds are a smart financial choice. Here is an honest breakdown:
Price
Lab-grown diamonds typically cost 30 to 50 percent less than natural diamonds of the same carat weight, cut, color and clarity grade. This price gap has widened in recent years as production technology improved and output increased. For buyers who want a larger stone within a fixed budget, lab-grown diamonds offer a clear advantage.
Resale Value - Be Honest With Yourself
Lab-grown diamonds do not hold resale value well. As production output increases and costs fall, the secondary market for lab diamonds continues to soften. If you are buying primarily for financial reasons or with the intention of reselling later, natural diamonds have a stronger track record.
That said, the majority of fine jewelry buyers do not resell. They buy for a milestone, a person, or a feeling - none of which requires resale potential. For those buyers, the lower cost of lab-grown diamonds is simply better value, not a compromise.
Market Trends
Lab-grown diamond market share has grown consistently. According to industry tracking, lab-grown diamonds now account for a significant portion of engagement ring sales in the United States. Consumer awareness is driving this shift - particularly among younger buyers who prioritize affordability and ethics alongside aesthetics.
Meanwhile, the natural diamond market continues to hold value for rare stones, branded collections and estate jewelry, where provenance and uniqueness contribute to pricing.
What Are Lab-Grown and Natural Diamonds Made Of?
Both lab-grown diamonds and natural diamonds are made of the same material: pure carbon. Specifically, the carbon atoms are arranged in a face-centered cubic crystal lattice, which is the defining structure of a diamond. This arrangement is what gives diamonds their exceptional hardness, thermal conductivity and optical clarity.
No other gemstone shares this exact structure. Cubic zirconia (CZ) is made of zirconium oxide. Moissanite is made of silicon carbide. White sapphire is aluminum oxide. All of these are simulants - visually similar to diamonds but chemically and physically distinct.
Both natural and lab diamonds contain trace elements in some cases:
- Nitrogen traces can cause a yellow tint (more common in natural diamonds)
- Boron traces can produce a blue hue
- In CVD lab diamonds, hydrogen or nitrogen inclusions may occasionally occur
These trace element differences are detectable only by specialized gemological instruments such as a spectroscope or high-tech diamond testers designed specifically for lab vs. natural detection.
Who Should Buy Lab Grown vs Natural Diamonds?
There is no single right answer - the best choice depends on your priorities, budget and how you plan to use the diamond.
Lab Grown Is Best For:
- Budget-focused buyers who want maximum size and quality for their money
- Eco-conscious buyers who want to minimize their environmental footprint
- Jewelry makers and designers who need consistent quality stones for production use
- Fashion and everyday jewelry - earrings, pendants, chains and stacking rings
- Buyers who want larger carat weight without a proportionally larger price tag
Natural Is Best For:
- Investment-minded buyers looking for longer-term resale value retention
- Heirloom and generational pieces where provenance and rarity carry emotional weight
- Collectors interested in rare fancy colored diamonds or historically significant stones
- Tradition-focused buyers for whom the billions-of-years origin holds meaning
- High-end bridal jewelry where natural diamond certification adds to prestige
Common Mistakes Buyers Make
Whether you are choosing a lab-grown or natural diamond, these are the errors that cost buyers money and satisfaction:
- Buying without certification. Always ask for a GIA or IGI certificate. Uncertified diamonds carry no verified quality guarantee.
- Prioritizing carat over cut. Cut determines how much a diamond sparkles. A well-cut smaller diamond will outshine a poorly cut larger one every time.
- Ignoring the difference between lab-grown and simulants. CZ and moissanite are not lab-grown diamonds. Know what you are buying.
- Assuming lab-grown means low quality. Lab diamonds can achieve the same color and clarity grades as the finest natural diamonds.
- Overlooking clarity for small stones. For diamonds under 0.5 carat, SI1 or SI2 will look identical to VS grades to the naked eye. Save the premium for larger stones.
- Not asking about the growth method. HPHT and CVD diamonds can have different visual characteristics. A knowledgeable seller should disclose this.
- Buying based on price alone. The cheapest lab-grown diamond may have poor cut quality or undisclosed inclusions. Balance value with verified quality.
Find Your Perfect Diamond with Tresor Jewelry Inc.
Whether you are sourcing diamonds for a personal piece or building a jewelry line, working with a knowledgeable wholesale supplier makes all the difference. Tresor Jewelry Inc., based in New York City's Diamond District at 42 W 48th Street, offers an extensive collection of fine jewelry crafted in 14K gold and sterling silver - including pieces designed to feature both natural and lab-grown stones.
Their catalog includes:
- 14K solid gold earrings, bangles, rings, necklaces and pendants
- Diamond-set silver jewelry - bangles, charms, connectors and ear wires
- Gemstone chains in over 80 varieties, from moonstone to emerald
- Gold-filled and silver chains in multiple styles for wholesale needs
- Jewelry findings - clasps, jump rings, headpins and more
Whether you prefer natural gemstones or want pieces designed to complement diamond-quality stones, Tresor's collection spans a wide range of styles and price points - suitable for retailers, jewelers and individual buyers alike.
How to Choose the Right Diamond
Use these practical steps when making your decision:
- Start with your purpose. A diamond for daily wear has different requirements than one for a sentimental heirloom or a financial investment. Define what this piece is for before looking at stones.
- Set your budget first. Know your number before looking at stones. Lab-grown diamonds let you stretch a budget; natural diamonds ask you to justify the premium.
- Prioritize cut quality. Regardless of natural or lab-grown, cut is the single most important factor for brilliance and sparkle.
- Check the certification. Always verify GIA or IGI grading documentation for any diamond you purchase.
- Understand the 4 Cs. Cut, Color, Clarity and Carat - know what each means and decide which matter most for your specific piece.
- Ask about origin transparency. For lab-grown diamonds, ask whether the stone was grown via HPHT or CVD. For natural diamonds, ask about Kimberley Process compliance.
- Buy from a reputable source. Whether online or in-store, work with a seller who provides documentation, answers questions clearly and stands behind their product.
Final Thought
The Difference between lab-grown and natural diamonds does not have a winner - it has a context. Lab-grown diamonds are real, high-quality and increasingly affordable. Natural diamonds carry geological rarity and a market history that many buyers still value.
The question is not which diamond is better. The question is which diamond is right for you. With the information in this guide, you now have what you need to answer that with confidence.
Understand the science. Compare the value. Know the terminology. And when you are ready, buy from a source you trust.
FAQs
Q1: What is a lab grown diamond and is it a real diamond?
A lab-grown diamond is a genuine diamond grown in a laboratory using HPHT or CVD technology. It shares the exact same chemical composition, crystal structure, hardness and optical properties as a mined diamond. Gemologists require specialized equipment to distinguish one from the other.
Q2: What is the difference between lab grown and natural diamonds in terms of quality?
There is no quality difference in chemical or physical terms. Both types are graded on the same 4 Cs scale. Lab-grown diamonds can achieve FL to I grades just like natural ones. The primary differences are in origin, price, resale value and environmental impact - not in the diamond itself.
Q3: What is a lab grown diamond called in the jewelry industry?
Lab-grown diamonds are also referred to as man-made diamonds, cultured diamonds, created diamonds or synthetic diamonds. These terms all describe the same product - a real diamond produced in a controlled laboratory setting rather than extracted through mining.
Q4: What is the best clarity for a lab grown diamond?
For most jewelry purposes, VS1 to VS2 clarity is the recommended range for lab-grown diamonds. Inclusions at this grade are not visible to the naked eye and the pricing remains practical. For smaller accent stones or chain settings, SI1 is often sufficient and represents excellent value.
Q5: What is a lab grown diamond made of?
A lab-grown diamond is made of pure carbon atoms arranged in a cubic diamond lattice - exactly the same as a natural diamond. No other gemstone has this structure. The carbon is either subjected to extreme heat and pressure (HPHT) or deposited via gas ionization (CVD) to form the crystal.
Q6: What is a natural diamond made of?
A natural diamond is composed of pure carbon atoms bonded in a face-centered cubic crystal structure formed under immense geological pressure and heat over billions of years. This structure is what makes diamonds the hardest naturally occurring substance on Earth, scoring 10 on the Mohs hardness scale.
Q7: Do lab-grown diamonds hold their value over time?
Lab-grown diamonds generally do not retain resale value as well as natural diamonds. As production technology advances and supply increases, their market prices have declined. They remain an excellent value for personal use and wearable jewelry, but buyers seeking long-term investment value may prefer natural diamonds.
Q8: Are lab-grown diamonds more ethical than natural diamonds?
Lab-grown diamonds have a traceable origin and no association with conflict mining, which many buyers consider an ethical advantage. Natural diamonds sourced through Kimberley Process-compliant suppliers can also be ethically sourced. Both options have ethical pathways - the key is working with a transparent, responsible seller.
Q9: Can you tell the difference between lab grown and natural diamonds by looking at them?
No. Lab-grown and natural diamonds are visually identical. Even trained gemologists and jewelers cannot distinguish them with the naked eye. Identification requires specialized instruments such as advanced spectroscopes or diamond testing machines designed specifically for this purpose.
Q10: What are the latest lab-grown diamond news and market trends?
Lab-grown diamond market share has grown steadily, particularly in the engagement ring segment in North America. Prices have continued to fall as production efficiency improves. GIA now grades lab-grown diamonds with the same standards as natural ones, further legitimizing their position in the fine jewelry market.
