When shopping for a diamond, you may come across two main choices: lab-grown diamonds and natural diamonds. At first glance, they can look almost exactly the same, but there are important differences in how they are made, their price, rarity, and long-term value.
So, are lab diamonds real diamonds? Yes. Lab-grown diamonds are genuine diamonds with the same basic chemical composition and crystal structure as natural diamonds. The biggest difference is where they come from.
What Are Lab-Grown Diamonds?
Lab-grown diamonds are diamonds created in a controlled laboratory environment. They are produced using advanced technology that recreates the conditions under which diamonds naturally form.
There are two common methods:
- HPHT (High Pressure High Temperature): Uses high pressure and high temperature to grow a diamond.
- CVD (Chemical Vapor Deposition): Uses a carbon-rich gas and specialized equipment to grow diamond crystals layer by layer.
Once created, lab-grown diamonds can be cut and polished just like natural diamonds.
What Are Natural Diamonds?
Natural diamonds are formed deep beneath the Earth’s surface over extremely long periods of time. Natural heat and pressure transform carbon into diamond crystals.
After mining, rough diamonds are cut, polished, graded, and turned into jewelry.
Natural diamonds are considered rare because their formation requires very specific geological conditions and occurs over a very long period.
Lab Diamonds vs Real Diamonds
One common misconception is that lab diamonds are “fake” diamonds. This isn’t accurate.
Lab-grown diamonds are real diamonds. They have essentially the same chemical, physical, and optical properties as natural diamonds. A lab-grown diamond is not the same thing as a diamond simulant such as cubic zirconia or some types of moissanite.
The main difference is their origin:
| Feature | Lab-Grown Diamonds | Natural Diamonds |
|---|---|---|
| Origin | Created in a laboratory | Formed naturally underground |
| Composition | Carbon | Carbon |
| Crystal Structure | Diamond crystal structure | Diamond crystal structure |
| Appearance | Looks like a natural diamond | Natural diamond appearance |
| Hardness | 10 on Mohs scale | 10 on Mohs scale |
| Price | Usually less expensive | Usually more expensive |
| Rarity | More readily produced | Naturally rare |
| Mining | No traditional diamond mining | Requires mining |
| Age | Recently created | Typically billions of years old |
Are Lab Diamonds Cheaper Than Natural Diamonds?
Yes. Lab-grown diamonds are generally much less expensive than comparable natural diamonds.
The exact price difference depends on factors such as carat weight, cut, color, clarity, certification, and the retailer. However, lab-grown diamonds are often available at a significantly lower price.
This can make a lab diamond attractive to buyers who want a larger stone or higher quality within a specific budget.
For example, instead of spending a large amount on a natural diamond, someone might choose a lab-grown diamond with a larger carat size while keeping the overall jewelry budget lower.
Do Lab Diamonds Look Different?
To the naked eye, a high-quality lab-grown diamond can look essentially the same as a natural diamond.
Both can have:
- Brilliant sparkle
- Similar fire and brilliance
- The same hardness
- The same diamond crystal structure
- Similar optical properties
Professional gemological equipment can distinguish between lab-grown and natural diamonds by examining characteristics created during their formation.
Lab Diamonds vs Natural Diamonds: Which Is Better?
There isn’t one answer that works for everyone.
A lab-grown diamond may be a better choice if your priority is getting more diamond for your money. They can be especially appealing if you want a larger engagement ring while maintaining a particular budget.
A natural diamond may be preferable if you value geological rarity, natural origin, and the traditional history associated with mined diamonds.
The right choice depends on what matters most to you.
Do Lab Diamonds Have the Same Durability?
Yes. Diamonds are one of the hardest naturally occurring materials, and lab-grown diamonds have the same diamond structure responsible for their exceptional hardness.
Like natural diamonds, lab-grown diamonds can still be scratched or damaged under certain circumstances, particularly around edges or areas with inclusions. Proper care is important regardless of which type you choose.
Do Lab Diamonds Hold Their Value?
This is an important consideration.
A diamond’s purchase price and resale value are not necessarily the same. Lab-grown diamonds generally have weaker resale value than their original retail price, and their market prices have declined significantly as production has become more widespread.
Natural diamonds can also sell for considerably less than their original retail price, so neither type should automatically be considered an investment.
If your primary goal is jewelry that you love and can enjoy for years, resale value may be less important than appearance, quality, and price.
Which Should You Buy?
Consider a lab-grown diamond if:
- You want to spend less.
- You prefer a larger stone for your budget.
- You want a diamond without traditional mining.
- You care more about appearance and specifications than geological origin.
Consider a natural diamond if:
- You value natural geological rarity.
- You prefer a diamond formed naturally in the Earth.
- The traditional diamond story is important to you.
- You are comfortable paying more for natural origin.
Final Thoughts
The debate over lab diamonds vs real diamonds is based partly on a misunderstanding. Lab-grown diamonds are not simply diamond imitations—they are genuine diamonds. The biggest distinction is their origin.
Natural diamonds are formed inside the Earth, while lab-grown diamonds are produced using modern technology. Both can offer exceptional beauty, durability, and sparkle.
Ultimately, the best diamond depends on your budget, personal preferences, and how much you value natural rarity versus affordability. Before buying, compare the diamond’s cut, color, clarity, carat weight, certification, and total price rather than focusing only on whether it was grown in a lab or mined from the Earth.