Lab-Created Diamonds vs Natural Diamonds - Price, Quality, Ethics & Resale Value

Diamonds are a symbol of love, elegance, and timeless beauty, but choosing between natural and lab-grown diamonds has never been easy.

Lab-created gemstones are chemically identical to their mined counterparts, same crystal structure, same optical properties, same hardness on the Mohs scale. A lab sapphire is still corundum. A lab emerald is still beryl. The only difference is where it formed and how long it took to get there.

So the real question isn't whether lab-created gemstones are real. They are. The question is which one is right for what you're actually buying, and why the answer changes depending on your priorities.

This guide covers everything: formation, price, resale value, ethics, certification, and a stone-by-stone breakdown so you're not left guessing.

Quick Comparison: Lab-Created vs Natural Gemstones

Factor	Natural Gemstones	Lab-Created Gemstones
Origin	Form naturally inside the Earth	Grown in a laboratory
Formation Time	Unique inclusions, natural growth features	Often cleaner, more consistent color and clarity
Appearance	Natural mineral composition	Often, the same composition as the natural counterpart
Price	Usually more expensive	Usually more affordable
Rarity	Naturally limited	More available because the supply can be produced
Durability	Depends on gemstone type	Usually comparable if the composition is the same
Resale Value	Often stronger for rare, untreated, certified stones	Usually, lower resale value
Detectability	Natural inclusions visible under a loupe	Requires spectroscopy or UV light to confirm lab origin
Best For	Heirlooms, collectors, rarity-focused buyers	Budget-friendly fine jewelry, larger stones, and everyday wear

What Is a Natural Diamond?

A diamond is one of the most remarkable creations of nature, known for its unmatched brilliance, hardness, and rarity. It is composed entirely of carbon atoms arranged in a unique crystalline structure, giving it unparalleled durability and a sparkle that has captivated people for centuries.

How Are Natural Diamonds Formed?

Natural diamonds are formed deep within the Earth’s mantle, about 90–120 miles below the surface, under extreme heat and pressure. This process takes billions of years and involves several key stages.

Carbon from deep within the Earth is exposed to intense pressure and temperatures exceeding 2,000°F. Over time, these conditions cause the carbon atoms to bond into a crystalline structure, forming a diamond.

Volcanic eruptions push these diamonds closer to the Earth’s surface through kimberlite pipes, where they are eventually mined.

Do you know? The oldest natural diamonds are believed to be over 3 billion years old, making them some of the Earth’s most ancient treasures.

Why Are Natural Diamonds Special?

Natural diamonds are admired for more than just their beauty. Their formation process, rarity, and historical significance make them truly unique.

Here is what sets them apart:

• Each natural diamond is a one-of-a-kind gem that has taken billions of years to form. This rarity adds to their allure and value.
• Diamonds are the hardest naturally occurring material on Earth, ranking 10 on the Mohs scale. This makes them ideal for daily-wear jewelry like engagement rings.
• Throughout history, natural diamonds have symbolized love, strength, and eternity, making them the ultimate expression of commitment.

Only about 20% of mined diamonds are gem-quality, while the rest are used for industrial purposes.

The Journey of a Natural Diamond - From a Stone to a Wearable Accessory

The path of a natural diamond from deep within the Earth to your jewelry box is fascinating and labor-intensive:

• First, the mining process where diamonds are extracted from kimberlite or lamproite pipes, or alluvial deposits.
• Then comes the Sorting and grading, in which diamonds are sorted based on size, color, and clarity.
• After the grading process, rough diamonds are expertly cut to maximize their brilliance and value.
• In the last, diamonds are certified by organizations like GIA to verify their quality based on the 4Cs: cut, color, clarity, and carat weight.

The Cullinan Diamond, the largest diamond ever found, weighed 3,106 carats in its rough form and was discovered in South Africa in 1905.

Natural Diamonds and Their Legacy

Natural diamonds carry a legacy of luxury, history, and significance. They’ve been coveted for centuries by royalty and everyday buyers. Iconic diamonds like the Hope Diamond and the Koh-i-Noor are testaments to their enduring appeal.

These are chosen for multiple reasons:

• The diamonds are authentic - formed naturally over billions of years, every diamond tells a story.
• High-quality natural diamonds often retain or increase in value over time.
• Passed down through generations, natural diamonds are timeless treasures.

Approximately 122 million carats of natural diamonds are mined globally each year, yet they remain one of the rarest gemstones.

What Are Lab-Created Diamonds?

A lab-created gemstone is a stone grown in a controlled environment using processes that replicate the conditions under which that stone forms in nature. The result has the same chemical composition, crystal structure, and optical properties as its mined counterpart. When gemologists at the International Gem Society describe synthetic gemstones, they're explicit: a synthetic emerald is a real emerald, just not a natural one.

A simulant is something else entirely. Cubic zirconia isn't a lab diamond. Glass isn't a lab sapphire. Simulants imitate the appearance of a gemstone without sharing its chemistry or structure. If someone's selling you a 'lab ruby' that turns out to be synthetic spinel or glass, that's a simulant, not a created corundum.

Lab-Created, Synthetic, Simulated, and Imitation: Don’t Confuse These Terms

• Lab-created / lab-grown / synthetic / created all refer to the same thing: a genuine gemstone grown outside the earth.
• Simulant/imitation, a lookalike with different chemistry; lower value, different durability.
• Treated/enhanced natural, a real mined stone that's been heat-treated or fracture-filled to improve appearance.

Always ask which category you're looking at. A good jeweler will tell you immediately. The FTC Jewelry Guides also require clear disclosure for laboratory-created and imitation stones.

How Lab Gemstones Are Made — Method by Method

Lab-grown diamonds are produced through two techniques. High-Pressure High-Temperature (HPHT) exposes carbon to roughly 725,000 PSI and temperatures up to 2,700°F inside a lab chamber, recreating the conditions of the earth's mantle where natural diamonds form. Chemical Vapor Deposition (CVD) takes a different approach: a diamond seed is placed in a chamber filled with carbon-rich gas, which is then heated to around 1,400°F.

The gas breaks down, and carbon atoms deposit onto the seed layer by layer. CVD allows tighter control over the final stone's clarity and color profile. As the Gemological Institute of America notes, the first lab-grown diamond was produced by General Electric back in 1954, though the technology has advanced considerably since then.

Are Lab-Created Gemstones Real?

Yes. Lab-created gemstones have the same chemical composition, crystal structure, and optical properties as their naturally mined counterparts. A lab sapphire is still corundum. A lab emerald is still beryl. 'Real' refers to the material, not where it formed.

The Advantages of Lab-Grown Diamonds

Lab-grown diamonds cost 20–40% less than natural diamonds, allowing buyers to get a larger or higher-quality stone for their budget.

No mining is required, eliminating concerns about conflict diamonds or environmental destruction. Lab-grown diamonds have a significantly lower carbon footprint than mined diamonds. Their controlled creation allows for precision in size, shape, and color.

Over 70% of millennials prefer lab-grown diamonds due to their affordability and ethical advantages.

The Journey of a Lab-Grown Diamond

The process of bringing a lab-grown diamond to market is streamlined and efficient:

• Diamonds are grown using HPHT or CVD technology in a lab.
• Like natural diamonds, lab-grown diamonds are cut and polished by skilled artisans.
• Reputable labs like IGI (International Gemological Institute) or GIA (Gemological Institute of America) certify lab-grown diamonds based on the 4Cs: cut, color, clarity, and carat weight.

Lab-grown diamonds are often graded using the same criteria and institutions as natural diamonds.

Why Choose a Lab-Grown Diamond?

Lab-grown diamonds are ideal for anyone looking for a stunning, ethical, and affordable gemstone.

These unnatural diamonds are a testament to human innovation, offering an ethical and eco-friendly way to enjoy the brilliance of diamonds. These absolutely are a modern choice for conscious buyers who want luxury without compromise.

The first lab-grown diamond was created in 1954, but advancements in technology have made them widely available and indistinguishable from natural diamonds today.

Certification: What to Ask for Before You Buy

This part matters regardless of which direction you go.

For natural gemstones, a GIA grading report is the standard. The Gemological Institute of America is the most trusted certification authority in the industry, their reports include origin determination for colored stones, which is significant for high-value natural rubies, sapphires, and emeralds. Geographic origin affects price substantially: a GIA-certified Burmese ruby commands a premium over an equivalent Madagascar ruby, even with identical visual characteristics.

For lab-created gemstones, an IGI (International Gemological Institute) or GIA lab report is standard. These reports explicitly state the stone's lab-grown origin. Lab-grown diamonds are often certified by IGI, GIA, or GCAL. The first lab-grown diamond was created in 1954, and the grading infrastructure has matured considerably since. Don't buy a lab gemstone without certification that confirms what it is.

If a seller can't provide documentation or resists when you ask, that's reason to pause. Reputable jewelers certify their stones because it protects both parties. Any hesitation around paperwork is a red flag.

One more thing: always check that the certification is from the named lab directly, not a 'house certificate' issued by the retailer. Those aren't independent verifications.

Resale Value: The Number Most Buyers Don't Think About

This is where the comparison gets honest.

Lab-created gemstones generally resell at 20–30% of their original retail price. Natural gemstones, particularly high-quality rubies, sapphires, emeralds, and diamonds, can retain 60–80% of retail value in the secondary market, and rare specimens appreciate over time.

The reason isn't quality. Lab gems are just as beautiful and durable. The reason is supply. Natural gemstones are finite. A fine unheated Padparadscha sapphire or an untreated Colombian emerald doesn't get more available over time; it gets rarer. Lab gems can be produced in whatever quantity the market demands, which suppresses their secondary market value as production scales.

This matters most if you're buying with investment intent or planning to pass a piece down as an heirloom with monetary value attached. For everyday fine jewelry, an engagement ring you'll wear for decades, a birthstone pendant, a colored stone bracelet,, resale value is largely irrelevant to the experience of owning it.

A diamond is fundamentally a luxury purchase, not a financial instrument. The same is true of any gemstone. Buy what you'll love wearing, not what you think will appreciate. But go in knowing the resale reality so you're not surprised later.

Why do some people Still Prefer Natural Diamonds?

The rarity and history of natural diamonds are highly valued, which is why they are considered timeless and carry sentimental value for many buyers.

Most importantly, natural diamonds may hold better resale value over time.

Will Lab-made Diamonds Replace Natural Diamonds Ever?

While lab-made diamonds are becoming more popular because of their price and environmental benefits, they are expected to partially replace mined diamonds.

The primary reason is that natural diamonds take billions of years to be created and are thus rarer than lab-grown diamonds.

Natural diamonds have intrinsic emotional value and charm that man-made diamonds can never replicate. Lab-grown diamonds might be an economic and a good ecological option,

Yet their natural counterparts will continue to be in demand for people who appreciate their value and distinctiveness.

So, the answer is No!

A lab-grown diamond is an affordable choice. Still, it can't replace the value of natural diamonds because they have more value and can't be replaced with any lab-grown diamonds.

FAQs

Can lab-grown diamonds be resold?

Yes, lab-grown diamonds can be resold, but they generally have a lower resale value compared to natural diamonds due to their abundance.

Do lab-grown diamonds have a higher or lower demand than natural diamonds?

Lab-grown diamonds are seeing growing demand due to their affordability. less price and ethical appeal, but natural diamonds still dominate the luxury market due to their rarity and historical value.

All this deciding between natural and lab-grown diamonds comes down to what feels right for you. Both have their own beauty and meaning, and the choice is all about what matches your style, values, and budget. At Gem Jewelers Co., we have got you covered with a stunning range of natural diamond jewelry crafted into stunning engagement rings, necklaces, and more. Take a look and find a diamond that is as unique as your style is!