What Are Lab-Grown Diamonds & Are They The Right Choice For You?

Lab-grown diamonds have moved from curiosity to a mainstream option faster than almost any development in the fine jewelry industry.

Lab-grown center stones were 61% of US engagement-ring purchases in 2025, per The Knot's Real Weddings Study 2026.

And a fair amount of noise came with the rise in popularity. With confident claims on both sides and marketing dressed up as education, buyers are left trying to sort fact from agenda to make a decision.

We aren’t here to sell you on one option or the other. We create lab-grown diamonds and sell natural diamonds—and we recognize there are situations in which both are the better choice. 

As experts, we’re here to give you the information you actually need to make a decision you'll feel good about.

What Lab-Grown Diamonds Actually Are

The most important thing to understand about lab-grown diamonds is also the most frequently misunderstood.

They ARE real diamonds. Not diamond-like. Not diamond-inspired.

Lab-created diamonds use the same material, crystal structure, and optical and physical properties as natural diamonds. The only difference is that they’re created in a controlled environment rather than extracted from the earth.

How Diamonds Are Grown

Two methods are used to grow them:

• HPHT (high pressure, high temperature): Replicates the conditions under which natural diamonds form — extreme heat and pressure applied to a carbon source until it crystallizes.
  
• CVD (chemical vapor deposition): Builds a diamond layer by layer from a carbon-rich gas in a vacuum chamber.

The end result of both processes is a diamond that a trained gemologist cannot distinguish from a natural stone with the naked eye, and usually not even with specialized equipment. That’s how similar they are.

How Diamonds Are Graded

Lab-grown diamonds are graded by the same standards as natural diamonds.

• Cut
  
• Color
  
• Clarity
  
• Carat

This applies to ANY diamond, natural or lab-grown. When you purchase a lab-grown diamond from a reputable jeweler, it comes with documentation that tells you exactly what you're getting, just as a natural diamond would.

What Lab-Grown Diamonds Are NOT

Lab-created diamonds are not moissanite, which is a different material entirely that happens to resemble a diamond.

They are not cubic zirconia, which is softer, less durable, and visually distinct to anyone who knows what to look for. Those are simulants — stones that approximate the look of a diamond without sharing its composition.

How Lab-Created Diamonds Differ from Natural Diamonds

If the composition is identical, where does the difference actually lie? For most buyers, it comes down to four things: origin, rarity, resale value, and price. All of them are worth understanding before you decide.

Origin

A natural diamond formed somewhere between one and three billion years ago, under conditions of extraordinary heat and pressure, deep within the Earth's mantle.

It was carried to the surface by volcanic activity, discovered, mined, and eventually cut. That journey is part of what a natural diamond embodies, and that matters to many buyers.

A lab-grown diamond was created in a matter of weeks. Chemically, it arrived at the same place. The path it took to get there is entirely different.

Rarity

Natural diamonds of fine quality are finite. The geological conditions that produce them don't repeat on any human timescale, but there are billions of tons of rough diamonds that exist deep within the Earth. 

Lab-grown diamonds are not subject to the same constraints. Production has scaled significantly in recent years and continues to do so. This doesn't diminish their quality, but it does change their relationship to scarcity.

Resale Value

This is the area where the difference is most concrete.

Natural diamonds, particularly in fine grades, have historically held their value with reasonable stability. Lab-grown diamonds have not followed the same trajectory.

As production has increased and prices have dropped, the resale market for lab-grown stones has softened considerably. A lab-grown diamond purchased today is unlikely to be worth the same amount in ten or twenty years.

For buyers focused on the present, this may not factor into the decision at all. For buyers thinking about a piece as a long-term asset or future heirloom, it's worth weighing honestly.

Pricing

Lab-grown diamonds cost about 70-80% less than natural diamonds of equivalent grade. A budget that would buy a modest one-carat natural diamond can buy an exceptional two-carat lab-grown stone, with the budget left for a more elaborate setting. For buyers who prioritize size and visual quality, that gap is a genuine advantage.

But it's worth understanding why that gap exists because it's the same reason lab-grown diamonds don't retain resale value the way natural stones do. Natural diamonds are scarce. The supply of fine-quality stones is finite, but lab-grown diamonds don’t have that constraint. 

As production technology has improved, supply has scaled rapidly and prices have fallen with it. The chemistry is identical, but scarcity is what the market has always priced in fine gemstones, and lab-grown diamonds simply don't have it. 

Who Chooses Lab-Grown Diamonds?

Buyers who prioritize size and quality over provenance typically choose lab-grown diamonds. It’s a great option for couples working within a budget who don't want to compromise on the stone's visual quality. Your budget can go further when shopping for lab-created diamonds.

Who Chooses Natural Diamonds?

Buyers who choose natural diamonds often do so because origin is part of what gives the stone meaning. There's something significant about wearing a material the earth spent billions of years producing. For buyers with heirloom intent, or those thinking about long-term value, that provenance carries real weight.

Environmental and Ethical Considerations

Price and size aren't the only reasons people choose lab-grown. Many buyers come to us because of concerns about mining, and those concerns deserve to be taken seriously:

• Land and habitat disruption
  
• Water use and carbon emissions from heavy machinery and transport
  
• A supply chain that has historically been hard to trace with confidence

Mining

Conflict diamonds are stones mined in war zones and sold to fund armed conflict, and they became a global conversation for good reason. The Kimberley Process was launched in 2003 to keep them off the market. Critics point out that its definition of "conflict" is narrow and that enforcement varies by country. 

Large-scale mining also moves an enormous amount of earth, roughly 250 tons for a single carat. Open-pit operations can permanently reshape landscapes, destroy habitats, and affect local water supplies. 

The "Eco-Friendly" Claim

Lab-grown diamonds are often marketed as the sustainable choice, but the full picture is more complicated. 

HPHT and CVD both use a lot of electricity, and more than 60% of lab-grown diamonds are produced in regions that run mostly on coal. A lab-grown stone's footprint depends almost entirely on its power source. Stones grown with renewable energy produce far fewer emissions than mined diamonds, but they make up a small share of what's on the market.

"Sustainable" deserves a second look no matter which kind of diamond it's attached to.

Where Lab-Grown Does Have an Advantage 

A lab-grown diamond never passed through a mine, so there's no question of it coming from a conflict zone, and its grading report confirms it was grown in a lab. If a traceable origin matters most to you, that's a solid reason to choose lab-grown.

Sourcing is complicated on both sides. If it matters to you, ask our jewelers about the lab-grown and natural diamonds we sell and what we know about where each one came from. We're glad to have that conversation openly (and any jeweler worth buying from should be, too).

4 Questions Worth Asking Before You Decide

There is no wrong choice! It all depends on what aspects of the diamond matter most to you. 

Here are some questions to consider.

• Does the origin of the stone matter to you or to the person receiving it?
  
• Are you prioritizing size and visual quality, or rarity and long-term value?
  
• How do you feel about resale value as a factor?
  
• Have you seen both options in person, at comparable grades?

We are happy to walk through these questions and conversations with you in our Bellingham showroom.

See Both & Decide For Yourself

The question of lab-grown versus natural isn't one we think buyers should feel pressured to answer quickly or alone. It's a decision that involves budget, values, sentiment, and a clear look at what matters most to the person who will wear the piece.

What we can tell you is that both options are represented honestly at Neeter House. Our job is to help you find the right answer for you, not to steer you toward the one that's easier to sell.

Come to our showroom in Bellingham, see both side by side, and ask every question you have. That's exactly what we're here for.