Are Man-Made Diamonds Real? What You Need to Know

Yes. Man-made diamonds are diamonds. If a person refers to "man-made diamonds," he is referring to diamonds that are formed by people in laboratories or factories rather than being naturally formed inside the earth. Diamonds manufactured in labs are chemically identical to diamonds formed inside the earth except for their origin.

The important thing here is the source of the diamond and not its composition.

A man-made or laboratory-formed diamond is different from diamond simulants such as cubic zirconia and moissanite. Diamond simulants are materials that look like diamonds but are not diamonds.

When you are considering buying a diamond, this information will be useful.

Are Man-Made Diamonds Real Diamonds?

YYes. Lab-created diamonds are real diamonds when they have the chemical composition and crystal structure of the diamonds.

As defined by the Gemological Institute of America (GIA), laboratory diamonds have almost the same chemical composition and crystal structure like natural diamonds. They also possess the similar optical and physical properties.

They only differ in their sources:

• Natural diamond: Formed naturally in the Earth.
• Man-made or laboratory-grown diamond: Grown by people using controlled laboratory technology.
• Diamond simulant: A different material that is made to look like diamond.

Thus, calling lab-made diamonds "fake" would be scientifically wrong. Lab-made diamonds are not imitations of diamonds. They are just man-made diamonds.

What Does "Man-Made Diamond" Mean?

"Man-made diamond" is one of several terms used for diamonds produced through a technological process.

You may also see terms such as:

• Lab-grown diamond
• Laboratory-grown diamond
• Laboratory-created diamond
• Lab-created diamond
• Synthetic diamond
• Man-made diamond

This can differ across companies and markets. In the United States, the key is to make sure that a laboratory-grown diamond is called out as a laboratory-grown or laboratory-created diamond and not presented as a mined diamond. This is covered by the Jewelry Guides of the Federal Trade Commission.

For a buyer, the simplest question is:

Is this diamond natural or laboratory-grown?

That distinction should be clear in the product description and supporting documentation.

How Are Man-Made Diamonds Made?

Gem-quality laboratory-grown diamonds are primarily produced using two methods:

1. HPHT — High Pressure, High Temperature
2. CVD — Chemical Vapor Deposition

Both methods create diamond under controlled laboratory conditions, but the growth processes are different.

HPHT Diamonds

HPHT technology creates the conditions that lead to the formation of diamonds naturally through high pressure and high temperatures.

In the laboratory, a tiny diamond seed is put in the equipment together with carbon and other materials. Carbon crystallizes around the diamond seed and grows into a diamond.

The HPHT technology is created on the conditions under which diamonds grow naturally.

CVD Diamonds

The acronym CVD means Chemical Vapor Deposition.

For this process to happen, there must be a diamond seed placed in a confined area. Carbon-containing gases will then be introduced and activated, hence forming diamond crystals.

HPHT and CVD diamonds can both be made into gemstones for wearing.

Are Lab-Grown Diamonds the Same as Natural Diamonds?

The two are chemically and crystalline identical in their basic nature, but they do not have the same source of origin.

Natural diamonds were formed through geological processes in the Earth over an extremely long period of time. Lab-created diamonds were formed using technological processes.

This difference in the source of origin is vital when describing or marketing a diamond.

Feature	Natural Diamond	Man-Made / Lab-Grown Diamond
Material	Diamond	Diamond
Main element	Carbon	Carbon
Crystal structure	Diamond crystal structure	Diamond crystal structure
Origin	Natural geological process	Controlled laboratory process
Created by	Nature	Human-controlled technology
Can be used in jewelry?	Yes	Yes
Is it a diamond?	Yes	Yes
Can ordinary visual inspection reliably distinguish them?	No	No

GIA notes that natural and laboratory-grown diamonds can be extremely difficult to distinguish without specialized equipment and trained analysis.

Are Man-Made Diamonds Fake?

No. A lab-created diamond is not a fake diamond.

The term "fake" is sometimes used loosely to refer to any diamond that is not mined, but there is a critical difference in gemology.

A diamond simulant mimics the look of a diamond but is made of something else.

Examples of diamond simulants are:

• Cubic zirconia
• Moissanite
• Some other diamond imitations

A laboratory-grown diamond, on the other hand, is diamond material produced in a laboratory.

GIA specifically distinguishes synthetic or laboratory-grown diamonds from diamond imitations and states that synthetic diamonds are real diamonds rather than imitations.

Therefore:

Lab-grown diamond ≠ fake diamond

Moissanite or cubic zirconia ≠ diamond

That distinction is important when comparing products and prices.

Can You Tell a Man-Made Diamond From a Natural Diamond?

Usually, you cannot distinguish one from another by merely looking at the stone.

A laboratory-made diamond cut properly will appear like a natural diamond to the naked eye. This kind of inspection alone is not enough to determine whether it is real or synthetic.

It requires specialized gemological instruments that detect properties unique to the diamond-making process.

Gemological laboratories can analyze:

• Spectroscopic characteristics
• Growth patterns
• Inclusions
• Color zoning
• Fluorescence or other responses
• Other characteristics revealed through specialized instruments

According to GIA, the advanced test is applied to differentiate between laboratory-made and natural diamonds.

That is the reason why one should not use a simple home test to establish if the diamond is natural or laboratory-made.

How Do You Know if a Diamond Is Man-Made?

The best way would be to look at the documentation of the diamond and get it tested through the right gemological tests.

Identification or certification reports may help you know if your diamond is natural or synthetic.

Many laboratory-grown diamonds come with a laser inscription on their girdle which will tell you that they are laboratory-grown diamonds. The GIA, for instance, has described laser inscriptions on laboratory diamonds.

When buying a diamond, you can:

1. Determine whether it is natural or lab-created.
2. Examine the grading paperwork that is available.
3. Consult with the lab that issued the report if possible.
4. Compare the report information with the actual stone.
5. Get an independent test done if the origin is significant and there is doubt.

Are Man-Made Diamonds as Hard as Natural Diamonds?

Yes. Laboratory-grown diamonds have the same physical characteristics as natural diamonds, including the characteristic hardness of diamonds.

In other words, the laboratory-grown diamond can be used to make jewelry just like the natural diamond.

But hardness is not an indicator of quality.

The appearance of a diamond will depend on such factors as:

• Cut
• Color
• Clarity
• Carat weight
• Proportions
• Polish
• Symmetry

A poorly cut diamond, whether natural or laboratory-grown, may not have the same visual appearance as a well-cut diamond.

Are Man-Made Diamonds Good for Jewelry?

Laboratory-grown diamonds can be used in many types of jewelry, including:

• Engagement rings
• Wedding rings
• Earrings
• Pendants
• Bracelets
• Fashion jewelry
• Custom jewelry

Their suitability depends on the individual stone's quality, cut, size, color, clarity and the design in which it is used.

If you are shopping for smaller diamonds for jewelry manufacturing or accent settings, you can explore Black Diamond's melee diamonds collection.

Melee diamonds are small diamonds commonly used in jewelry designs where multiple stones are set together.

Are Man-Made Diamonds Cheaper Than Natural Diamonds?

Laboratory diamonds are commonly available for lower prices compared to similar natural diamonds. However, the amount of price difference depends on the diamond and several other variables.

Thus, price should not be used as a determinant of whether the diamond is artificial or not.

A low price does not necessarily imply that the diamond is artificial while an expensive price does not mean that the diamond is natural.

What is it exactly that is being compared?

• Natural vs laboratory-grown
• Carat weight
• Shape
• Color
• Clarity
• Cut and proportions
• Grading documentation
• Treatments, if any
• Seller terms and policies

This gives you a more meaningful comparison.

Can a Diamond Tester Tell if a Diamond Is Man-Made?

A simple diamond tester can serve as a guide in establishing if the stone has the characteristics of diamond when subjected to its test, but it should not necessarily be considered as a means for testing whether it is natural or synthetic.

Natural and synthetic diamonds have numerous physical and optical characteristics in common.

Special equipment and special analysis may be needed to differentiate them.

Thus, there are two distinct questions:

Question 1: Is this material diamond?

Question 2: If it is diamond, is it natural or synthetic?

What Is the Difference Between a Man-Made Diamond and a Diamond Simulant?

This is one of the most important differences for buyers.

Man-made diamond

A man-made or laboratory-grown diamond is diamond produced through a technological process.

Diamond simulant

A simulant is another material that resembles diamond.

For example, moissanite and cubic zirconia can be used as diamond alternatives, but they are not diamond.

Type	Is it diamond?	Produced in a laboratory?	Looks similar to diamond?
Natural diamond	Yes	No	Yes
Lab-grown diamond	Yes	Yes	Yes
Moissanite	No	Often	Yes
Cubic zirconia	No	Yes	Yes

The distinction matters because a buyer should know exactly what material they are purchasing.

What Should You Check Before Buying a Man-Made Diamond?

If you are considering a laboratory-grown diamond, start with the basic product information.

1. Confirm that it is laboratory-grown

The product description should clearly identify the diamond as laboratory-grown or laboratory-created.

2. Check the grading documentation

If a grading report is provided, review the details and issuing laboratory.

3. Check the 4Cs or applicable quality information

For diamonds, buyers commonly consider:

• Carat
• Color
• Clarity
• Cut

The relative importance of each depends on the shape and the buyer's preferences.

4. Check the measurements

Two diamonds with the same carat weight can have different measurements and proportions.

5. Consider the shape

Round, oval, pear, emerald, cushion, radiant and other shapes can have different visual characteristics.

6. Review the seller's terms

Before purchasing, check shipping, returns, exchanges and other applicable policies.

7. Ask questions if the information is unclear

A reputable seller should be able to explain whether the stone is natural, laboratory-grown or a simulant.

What About Rough Man-Made Diamonds?

Not every diamond is sold as a finished, polished gemstone.

Rough diamonds are diamonds before cutting and polishing. Their appearance can be very different from the finished stones commonly seen in jewelry.

If you are interested in rough material, Black Diamond also has a rough diamonds collection.

When evaluating rough diamonds, professional identification and documentation can be especially useful because appearance alone may not provide enough information about the material or its origin.

What About Salt-and-Pepper Diamonds?

Salt-and-pepper diamonds are diamonds that have visible inclusions and hence have a unique look with black, gray or white inclusions.

Having visible inclusions does not necessarily mean that the stone is fake.

Inclusions are one of the characteristics of a diamond, and they can look very different from one stone to another.

If you are interested in a distinctive diamond style, Black Diamond's pear-shape salt-and-pepper diamond collection provides an example of how diamond appearance can vary beyond the traditional clear, colorless look.

Are Man-Made Diamonds Real for Engagement Rings?

Yes. Laboratory-grown diamonds can be used as the center stone or accent stones in engagement rings.

The choice between natural and laboratory-grown diamonds is primarily about factors such as:

• Origin
• Budget
• Desired size and quality
• Personal preferences
• Documentation
• Long-term ownership considerations

The important point is to make sure the product is accurately described.

For US consumers, the FTC's Jewelry Guides address how laboratory-created and simulated diamonds should be disclosed so that buyers understand that they are not mined diamonds.

Are Man-Made Diamonds Environmentally Friendly?

It would be best to stay away from making a generalization about all laboratory-grown diamonds being environmentally friendly.

The environmental impact of a laboratory-grown diamond depends on variables like technology used, energy resources, processing, and other variables.

The same goes for the process of natural diamond mining; it may vary greatly, depending on the mine and production methods.

If the environment matters to you, try to find more information about a particular diamond and how it was produced.

Are Man-Made Diamonds Worth Buying?

There isn't a one-size-fits-all answer for everyone.

A lab-grown diamond may suit a person who wants a diamond with a laboratory origin and is comparing different diamonds in terms of price, size, looks and quality.

A natural diamond may suit a person who wants a diamond with a geological origin.

The key thing is to know what you are buying.

Before making any decision, compare diamonds in terms of:

• Origin
• Quality
• Documentation
• Price
• Shape
• Carat weight
• Color
• Clarity
• Cut
• Seller policies

This gives you a clearer basis for comparing natural and laboratory-grown diamonds.

Frequently Asked Questions About Man-Made Diamonds

Are man-made diamonds real?

Yes. Lab-created or synthetic diamonds qualify as diamonds based on the fact that they share the same chemical composition and crystal structure as diamonds. The main difference between lab-created diamonds and natural diamonds is their source, which is either artificial or natural.

Are lab-grown diamonds fake?

No. Lab-grown diamonds are not imitation diamonds; rather, they are diamonds made in a laboratory. Cubic zirconia and moissanite, which are materials that imitate diamond, are called diamond simulants.

What is another name for a man-made diamond?

Depending on the source and market, you may see terms including laboratory-grown diamond, lab-grown diamond, laboratory-created diamond, synthetic diamond and man-made diamond.

How are man-made diamonds made?

Diamonds of gem quality are grown in laboratories using HPHT, which is an acronym for high pressure-high temperature process, and CVD, chemical vapor deposition. These two represent controlled technological procedures involved in diamond growth.

Are man-made diamonds as hard as natural diamonds?

Yes. Laboratory-grown diamonds have essentially the same physical properties as natural diamonds, including diamond's characteristic hardness.

Are man-made diamonds cheaper than natural diamonds?

Most lab-created diamonds sell for less compared to their natural counterparts, but prices depend on several factors including diamond quality, size, cut and market conditions. Price does not provide a reliable indication of whether a diamond is natural or laboratory-grown.

Do man-made diamonds have a grading report?

They can. Gemological laboratories provide reports for laboratory-grown diamonds. Reports may differ from one laboratory to another and even at different times, and therefore, consumers must be able to understand the report given. For instance, the Gemological Institute of America (GIA) offers identification and evaluation of laboratory-grown diamonds.

Are man-made diamonds good for engagement rings?

Yes, lab-grown diamonds can be used for engagement rings and jewelry. When choosing such diamonds, buyers must take into account features including their origin, price and quality.

How do I know if a diamond is laboratory-grown?

Refer to the product description and grading report. If it is from certain laboratories, then a laboratory-grown diamond will have a laser inscription that states that it is a laboratory-grown diamond.

Final Answer: Are Man-Made Diamonds Real?

Yes, synthetic diamonds are real diamonds.

The main distinction is how they were created. Natural diamonds are formed geologically in nature, whereas synthetic diamonds are made artificially using techniques like HPHT and CVD. Both are diamonds, and they have the same chemical and crystal structure.

What you should not mistake for lab-grown diamonds are diamond simulants. Moissanite and cubic zirconia may look like diamonds, but they are not.

When you are buying a diamond, do not stop at the term "real." Inquire about what kind of diamond it is, be it natural, lab-grown, or a simulant, and then examine the available information.

Black Diamond offers different diamond options for buyers and jewelry professionals, including lab-grown diamonds, melee diamonds, rough diamonds, and pear-shape salt-and-pepper diamonds.