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Understanding Lab-Grown Diamonds: A Comprehensive Guide

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In this article

Key Takeaways About Lab-Grown Diamonds

Lab-grown diamonds are shaking up the jewelry world, and for good reason. Here’s the scoop:

  • They’re the real deal: Chemically and physically identical to mined diamonds. No compromises on quality or sparkle.

  • Guilt-free bling: Produced without the environmental headaches or ethical question marks often tied to mining. Perfect for the eco-conscious crowd.

  • Ethical and environmental considerations: Lab-grown diamonds are viewed as a more ethical and environmentally friendly choice due to their production processes, which eliminate the negative impacts often associated with diamond mining.

  • More bang for your buck: Typically 40-80% cheaper than their natural cousins. That means bigger rocks or higher quality without breaking the bank.

  • Spoiled for choice: You’ll find lab-grown diamonds in all shapes, sizes, and colors. Whatever floats your boat, you’ll likely find it.

  • Trust but verify: Always go for certified lab-grown diamonds. It’s your guarantee of quality and value.

If you’re in the market for a diamond, my recommendation is to opt for a an established and trustworthy retailer such as those:

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Table of Contents

What Are Lab-Grown Diamonds?​

Lab-grown diamonds are the new kids on the block, but don’t let that fool you. They’re 100% real diamonds, just cooked up in a lab instead of deep underground. The tech’s been around for decades, but it’s only recently that these gems have really taken off. Why? Well, more and more folks are looking for jewelry that doesn’t come with a side of guilt. Traditional diamond mining has significant negative environmental and ethical implications, making lab-grown diamonds a sustainable and ethical alternative.

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2.01 Carat D VS2 Round Cut Lab-Grown Diamond
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2.01 Carat D VS1 Round Cut Lab-Grown Diamond
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Definition and Key Features - The Real Deal

Lab-grown diamonds are carbon copies (pun intended) of natural diamonds. Same chemical makeup, same physical properties, same dazzling brilliance. The only difference? One takes millions of years to form, the other just a few weeks. Lab created diamonds are chemically and physically identical to natural diamonds.

diamond molecular structure

Differences Between Lab-Diamonds and Diamond Simulants - Not to Be Confused With...

Now, don’t get lab-grown diamonds mixed up with diamond lookalikes like cubic zirconia or moissanite. Those are different beasts altogether:

  1. Cubic Zirconia (CZ): It’s like the diet soda of diamonds. Looks similar, but doesn’t have the same hardness or sparkle.

  2. Moissanite: This one’s its own thing. Different chemical structure, different sparkle. Some folks love it, but it’s not trying to be a diamond.

Lab-grown diamonds? They’re the real McCoy. Just as tough, just as beautiful, and increasingly popular for engagement rings and other jewelry. Although synthecized in a lab, lab-grown diamonds are not the same as synthetic diamonds; they possess the same chemical properties as natural diamonds, unlike other artificial alternatives.

A Quick History Lesson

The dream of making diamonds in a lab kicked off in the 1950s. General Electric was the first to crack the code, using a method called HPHT (High Pressure High Temperature). It was like recreating the belly of the Earth in a machine.

Lab-grown diamonds replicate the natural diamond growing process, highlighting the chemical and physical similarities between lab-grown and natural diamonds.

Since then, we’ve come a long way:

  • HPHT: This method’s still kicking, mimicking nature’s diamond-making process.

  • Chemical Vapor Deposition (CVD): The new kid on the block. It’s a bit like 3D printing, but for diamonds.

These advancements mean we can now consistently produce top-notch lab-grown diamonds. No wonder they’re giving natural diamonds a run for their money.

How Are Lab-Grown Diamonds Made?

Let’s peek behind the curtain at how these sparklers come to life:

Lab diamonds are created through a meticulous growth process that can take 3-6 weeks, with factors such as temperature, pressure, and the purity of the carbon source playing crucial roles in determining their quality.

HPHT diamonds

Picture a pressure cooker on steroids. We’re talking about pressures around 1.5 million pounds per square inch and temperatures over 1,500°C. A tiny diamond seed gets placed in this extreme environment with some carbon, and voila! A diamond grows.

Chemical Vapor Deposition (CVD) Diamonds

This method’s a bit more sci-fi. Imagine a chamber filled with carbon-rich gases. Add some microwaves or lasers, and these gases break down, depositing carbon atoms onto a diamond seed. Layer by layer, a diamond forms.

A rough lab grown diamond emerges from the CVD plasma reactor - Picture by Lightbox

Other Methods

There are a couple of other methods out there, like using high-energy plasma or even explosives, but they’re not as common. Just goes to show how creative scientists can get when it comes to making diamonds!

Properties of Lab-Grown Diamonds

Here’s the thing: lab-grown diamonds are identical to natural diamonds in every way that counts. They’re pure carbon, hard as nails (literally – they’re a 10 on the Mohs scale), and they conduct heat like champs.

Now, just like natural diamonds, lab-grown ones can have inclusions. These are tiny imperfections that happen during the growing process. But here’s a little secret: sometimes lab-grown diamonds can actually be clearer than natural ones. It’s all about controlling the process. The 4Cs (color, cut, clarity, carat) are crucial in assessing the diamond quality of lab-grown diamonds, just as they are for natural diamonds.

Benefits of Lab-Grown Diamonds

Okay, let’s talk perks:

Lab-grown diamonds are typically more affordable than their natural counterparts, making them an attractive option for budget-conscious buyers. They are also created in controlled environments, which means they are free from the ethical concerns associated with mining. Additionally, lab-grown diamonds offer the same beauty and quality as natural diamonds while being more environmentally sustainable.

Ethical and Environmental Bonuses

No open-pit mines, no worries about conflict diamonds. It’s jewelry you can feel good about. Additionally, lab-grown diamonds are favored for their ethical and environmental considerations, making them a more responsible choice compared to traditional natural diamonds.

Wallet-Friendly

Here’s where it gets interesting. Lab-grown diamonds typically cost 40-80% less than natural diamonds of the same quality. That $5,000 natural diamond? You might snag a similar lab-grown one for around $1,000. Just saying.

Variety is the Spice of Life

Want a hard-to-find shape or color? Lab-grown diamonds have got you covered. They come in all sorts of options that might be rare or super pricey in natural diamonds.

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2.02 Carat D VVS1 Round Cut Lab-Grown Diamond
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Comparing Lab-Grown and Natural Diamonds

Spot the Difference (You Can't)

Here’s the deal: put a lab-grown diamond next to a natural one, and even the pros might need special equipment to tell the difference. They look identical because, well, they are identical in all the ways that matter.

Test yourself: Is this diamond natural or lab-grown?

(So… let’s see if I can trick you!)

The Resale Value Proposition

Now, let’s talk money. If you’re buying a diamond as an investment, I hate to break it to you, but you’re barking up the wrong tree. Natural diamonds typically lose 40%-60% of their value the moment you walk out of the store. Lab-grown diamonds? Same story.


The only diamonds that might hold their value are the super rare ones – we’re talking massive rocks or fancy colors like pink or blue. But for the average Joe? A diamond’s value is in the joy it brings, not as a piggy bank.

My advice? Focus on making your partner happy. That’s the real investment. And hey, if you’re worried about upgrading in the future, check out retailers like James Allen. They offer a 100% upgrade policy, so you’re covered if you want to go bigger down the line.

Price Comparison

Let’s talk numbers. We’ll compare natural and lab-grown diamonds from James Allen, all E color, VS1 clarity, Ideal cut, and Triple excellent with no fluorescence:

Diamond Grading Natural Diamond Lab-Created Diamond Price Gap
0.5 Carat E VS1 Ideal Cut $780 $350 -55.13%
1.00 Carat E VS1 Ideal Cut $4,070 $870 -78.62%
1.5 Carat E VS1 Ideal Cut $9,660 $1,700 -82.40%
2.00 Carat E VS1 Ideal Cut $21,590 $2,780 -87.12%
2.5 Carat E VS1 Ideal Cut $34,330 $4,090 -88.09%
3.00 Carat E VS1 Ideal Cut $51,890 $6,530 -87.42%

The takeaway? You’re looking at some serious savings with lab-grown diamonds. Or, flip it around – you could get a much bigger diamond for the same budget. Food for thought, right?

Certification and Grading of Lab-Grown Diamonds

When it comes to grading lab-grown diamonds, we’re playing by the same rules as natural diamonds. It’s all about the 4 Cs:

  • Carat: How much does it weigh? One carat is 200 milligrams. Reputable gemologists assess diamonds based on the 4Cs, which include carat weight, to provide consumers with accurate information about the quality and characteristics of their diamonds.

  • Cut: This is the secret sauce for sparkle. It’s all about how well the diamond is shaped and faceted.

  • Color: We’re looking at a scale from D (colorless) to Z (light yellow or brown).

  • Clarity: How clean is the diamond? Fewer inclusions mean a higher clarity grade.

Now, here’s the important bit: always, ALWAYS go for a certified diamond. Look for big names like GIA (Gemological Institute of America) or IGI (International Gemological Institute). These guys are the real deal and will give you the confidence that you’re getting what you pay for.

Common Misconceptions About Lab-Grown Diamonds

Let me tell you, I’ve heard it all when it comes to lab-grown diamonds. Here are a couple of doozies I often have to debunk:

Lab created diamonds are authentic and of high quality.

"Lab-grown diamonds aren't as beautiful"

Nope, not true. I’ve had clients who couldn’t tell the difference between a top-quality lab-grown diamond and a natural one. In fact, sometimes the lab-grown ones can be even more flawless.

The “Real” vs. “Fake” Debate

This one really gets me. Lab-grown diamonds are 100% real diamonds. They’re not cubic zirconia, they’re not moissanite, they’re diamonds. Period. The only difference is their origin story.

Here’s a fun fact: In 2018, the Federal Trade Commission said lab-grown diamonds should be sold as real diamonds, just with a note about their origin. Even the GIA, the big dogs of diamond grading, started grading lab diamonds in 2020.

GIA lab-grown diamond certification

Choosing the Right Lab-Grown Diamond for You

Alright, so you’re thinking about a lab-grown diamond. Here’s what you need to consider:

  • What’s your style? Round, princess, oval? There’s no wrong answer here.

  • How important is the ethical angle to you? If it’s a big deal, lab-grown might be your jam.

  • What’s your budget? Figure out what you’re comfortable spending.

Remember, there’s no one-size-fits-all answer. It’s all about what makes you happy. Lab created diamonds offer a wide range of customization options to suit your personal preferences.

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2.0 Carat D VS2 Round Cut Lab-Grown Diamond
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2.0 Carat D VVS2 Round Cut Lab-Grown Diamond
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Conclusion - My Personal Experience

As a diamond consultant, I’ve seen firsthand how lab-grown diamonds are changing the game. I remember one client who came in dead set against lab-grown diamonds. But after we talked through the tech, the ethics, and the value, they ended up falling head over heels for a stunning lab-grown stone that was way beyond what they thought they could afford.

Here’s my takeaway: Whether you go natural or lab-grown, make sure it’s a choice that feels right for you. It’s not just about the rock – it’s about what it represents. And hey, if you can get a bigger, better diamond that aligns with your values and doesn’t empty your wallet? That’s a win in my book (classic Israeli jew, I know…)

Frequently Asked Questions

You bet they do! Lab-grown diamonds will pass the same tests as natural diamonds because they’re chemically identical. But here’s the thing: a professional gemologist with the right equipment can tell the difference. It’s all about looking at tiny differences in how the diamond grew.

I’ve seen YouTube videos where people bring lab diamonds to jewelers who claim they’re natural. If you ask me, that’s not great. A pro should know better than to make that call without the right tools. Never trust the eyes only.

Are they ever! According to MVI research, nearly 70% of millennials would consider a lab diamond for an engagement ring. In 2019, lab-grown diamonds made up about 3% of the $14 billion rough diamond market. That’s about $420 million, and it’s expected to grow to 5-10% of online jewelry sales.

If you look at Google Trends, you’ll see lab-grown diamonds started taking off around December 2014. The younger crowd is all about finding sustainable, value-for-money options that don’t skimp on the wow factor.

Based on my experience, in 2024 64% of my customers asked for a lab-created diamond.

Here’s a mind-bender for you: while natural diamonds take millions of years to form, their lab-grown cousins are ready in a matter of weeks! Typically, it takes about 6 to 10 weeks to grow a diamond in a lab. But get this – some high-tech setups can pop out a 1-carat diamond in just a week or two!

The exact time depends on the size and quality you’re after. It’s like baking a cake – the bigger and fancier you want it, the longer it takes. But compared to the millions of years for natural diamonds? It’s like comparing a microwave dinner to slow-roasting a turkey!

When it comes to lab-grown diamond certificates, you’ve got a few heavyweights in the ring. The top contenders are IGI (International Gemological Institute) and GIA (Gemological Institute of America).

IGI was an early adopter in the lab-grown game and has built up a solid reputation. They’ve been grading these gems since 2005 and really know their stuff.

GIA, the big dog in natural diamond grading, joined the party in 2020. They’ve brought their top-notch reputation to the lab-grown world.

My advice? Go with either IGI or GIA. Both offer detailed, reliable reports that’ll give you peace of mind about your sparkler. Just remember, a certificate is like a diamond’s report card – it tells you exactly what you’re getting!

Alright, let’s break this down. Treated and untreated lab diamonds are like siblings – same family, but with their own unique traits.

Untreated lab diamonds are the au naturel version. They come out of the lab looking just as nature (well, lab nature) intended. No extra steps, no additional processes. What you see is what you get.

Treated lab diamonds, on the other hand, have had a bit of a makeover. After the initial growing process, they go through some extra steps to enhance their color or clarity. It’s like giving them a spa day to bring out their best features.

The most common treatment is HPHT (High Pressure High Temperature). This can turn a yellowish or brownish diamond into a clearer, whiter one. It’s not cheating – it’s just giving the diamond a helping hand to look its best.

Remember, treated doesn’t mean fake or inferior. It’s just a different path to the same destination – a beautiful diamond. The key is transparency. Any reputable seller will disclose if a diamond has been treated. No secrets in the diamond world!

Not all CVD (Chemical Vapor Deposition) diamonds are treated. In fact, many CVD diamonds come out of the lab looking pretty darn good without any extra help.

However, and here’s where it gets interesting, some CVD diamonds do get a little touch-up. Why? Well, sometimes the CVD process can leave diamonds with a slight brown tint. Not exactly what most folks are looking for in their bling, right?

So, some manufacturers will give these diamonds the HPHT treatment we talked about earlier. It’s like a color correction filter for diamonds, turning that brownish hue into a more desirable colorless or near-colorless stone.

The bottom line? While treatment is common, it’s not a given for all CVD diamonds. Some are au naturel, some have had a bit of help. The important thing is knowing which is which – and that’s where those handy certificates come in.

Remember, whether treated or untreated, CVD diamonds are still 100% real diamonds. They’ve just taken a slightly different journey to get to your finger.

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