Enhanced Diamonds: Types, Pros, Cons and More (2024)

“A relatively small percentage of gem-quality diamonds are [enhanced] and they are treated for two reasons: to improve clarity or to alter color.” “Over the years, advances in technology have resulted in more sophisticated diamond clarity and color treatments. Some modern treatments, though, have a significant drawback: they can improve a diamond’s appearance, but may not be permanent.” Gemological Institute of America (GIA)

Bottom Line Recommendation:

Because your engagement ring is something you or your partner will wear for many years, it’s important to make a smart decision. While diamonds shouldn’t be considered a financial investment, you still want to spend wisely. Rather than an enhanced diamond, it’s best to go with a natural diamond or lab-created diamond like this one from James Allen that withstands daily wear, remains beautiful and maintains some of its value.

Enhanced Diamonds: Types, Pros, Cons and More (1)

What are Enhanced Diamonds?

Enhanced diamonds start as very included or low color diamonds and then undergo specific treatment for improving either their clarity or color. Treatment aims to reduce the appearance of inclusions or improve color, though enhanced diamonds have some drawbacks. Enhanced diamonds differ from natural diamonds that are left in their natural state and do not go through treatment.

To help you with the diamond buying process we lean on our expertise and experience. The author of this article, our CEO, Mike Fried has over 20 years of experience in the diamond industry. Mike started from the bottom, sorting and evaluating hundreds of thousands of diamonds to learn every facet (pun intended) of diamond quality and value. Mike followed that up by spending years buying and selling diamonds on the wholesale market as well as selling tens of millions of dollars worth of diamonds to diamond retailers.

Mike Fried has written hundreds of articles and helped answer more than 30,000 emails from our readers. This has given him a unique perspective on what information truly helps our readers in their quest for finding the perfect diamond engagement ring or piece of jewelry.

Mike is recognized as an industry expert and has been quoted in publications such as Us, People, Page Six, The Next Web and more.

To read more about our process for secret shopping and reviewing companies and additional details about how we operate, check out this article.

How To Identify an Enhanced Diamond?

You can identify an enhanced diamond by looking at its certificate or getting information from the diamond seller. In most cases, sellers are legally obligated to disclose when they’re selling an enhanced diamond. Trustworthy diamond dealers will specify in the diamond’s description that it is an enhanced diamond. You might also be able to identify an enhanced diamond by noticing if it appears to be super bright white or ultra eye-clean.

Deal Alert: Save 25% on Settings at Blue Nile!

Price and Value

Enhanced diamonds sell for approximately 30-50% less than natural diamonds with the same characteristics. The price is lower for enhanced diamonds, but so is the quality. Enhanced diamonds are less valuable than natural diamonds and are difficult to resell. Enhanced diamonds are also less durable due to the treatment they receive. Reputable lab entities like the GIA don’t usually offer certificates to enhanced diamonds, because most of the treatment is temporary, and therefore, the grading is as well.

Overall, there are fewer guarantees with enhanced diamonds and a lower value. Some sellers might try to convince you that an enhanced diamond is a smart buy, but it’s important to know what you’re getting with an enhanced diamond. In this guide, we cover the types of enhanced diamonds, the pros and cons, and our bottom line recommendation.

Enhanced Diamonds: Types, Pros, Cons and More (2)

How Diamonds are Enhanced

There are two types of diamond enhancements: clarity enhancement and color enhancement. Clarity enhancement is a treatment that attempts to make inclusions less visible. Color enhancement is a treatment that attempts to make the diamond appear more white or appear to have a distinct color like yellow or green.

Clarity Enhancement

There are four types of clarity enhancement: deep boiling, laser drilling, special laser drilling and fracture filling. These methods aim to reduce the appearance of inclusions in a diamond. Many times they also impact the diamond’s structure and brilliance. In essence, inclusions are “cavities” that are full of black material. If you’re able to clean out the cavities, the inclusion becomes less noticeable.

Deep Boiling

With this method, diamonds are boiled under deep pressure in an acidic solution. The procedure is done on diamonds with black inclusions that reach the surface of the diamond. If an inclusion is beneath the surface, the deep boiling method won’t penetrate and impact the inclusion.

Deep boiling doesn’t fill the cavity, it only removes the dark material so the inclusion becomes less noticeable. Deep boiling is an inexpensive and common procedure in the diamond industry. Most diamond manufacturers deep boil large batches of diamonds to clear out any black inclusions that reach the surface.

This treatment doesn’t impact the value of the diamond and is a well-respected method. In fact, deep boiling diamonds is the only clarity enhancement method approved by the GIA.

Laser Drilling

When a diamond has black inclusions that don’t reach the surface, a laser can be used to burn a microscopic hole in the inclusion. Once the laser opens up the inclusion, the diamond is then deep boiled to remove the dark material and clear out the inclusion.

As the GIA explains, this is a permanent treatment that enhances the diamond’s clarity. However, it can have a negative impact on the diamond’s strength.

With the laser drilling process, a small tunnel inclusion forms in the diamond where the laser is drilled. The formation of tunnels reduces the durability of the diamond. It’s also possible for dirt to become stuck inside the tunnel. The GIA does not sanction this procedure. That’s why any seller must legally disclose the diamonds that have undergone laser drilling.

Special Laser Drilling

Special laser drilling involves burning a microscopic thin layer on the diamond’s surface to reach the inclusion. These thin spots are larger than the laser drill tunnels but usually look more natural. The flat plane inclusion is also easier to fill than the tunnels that are created by regular laser drilling.

While the thin layer on the diamond is hard to detect, it still impacts the durability and quality of the diamond. The GIA does not sanction this process and does not issue certificates to diamonds that have undergone special laser drilling.

Fracture Filling

With fracture filling, inclusion cavities are filled with a microscopic amount of silicon and other compounds. Fracture filling is best for clear “feather” type inclusions that are empty cavities that can be filled to look nearly invisible. Many times, when a diamond is special laser drilled, the fracture is then filled.

Fracture filling can impact the diamond’s appearance and brilliance. From the top, the diamond might appear flawless but when viewed from other angles, the filling can disrupt the passage of light through the facets. Fracture-filled diamonds can become cloudy or hazy over time. Sometimes air bubbles can even get trapped in a filling.

The GIA does not certify diamonds that undergo fracture filling, because it impacts the beauty and longevity of the stone.

Pros and Cons of Clarity Enhanced Diamonds

When it comes to clarity enhanced diamonds, there are some pros and cons to consider. Check out the list below to help you determine if an enhanced diamond is a right buy for you.

Pros

  • Less expensive — usually 30-50% less expensive than non-enhanced diamonds
  • May appear more eye-clean at a glance

Cons

  • Lower value than natural, non-enhanced diamonds
  • No reliable certification, as the GIA does not grade laser-drilled or fracture-filled diamonds
  • Weak structure and low durability due to laser drilling
  • Cleaning is more difficult because enhanced diamonds can’t undergo ultrasonic cleaning or high temperatures due to possible damage
  • Lower brilliance as filling compounds impact how light reflects off the diamond
  • Can appear cloudy or hazy over time due to the fillings
  • Difficult to resell or trade
  • Repairing and resizing a ring can be challenging due to heat restrictions
  • Must notify jewelers and cleaners that you have an enhanced diamond as to avoid damage when cleaning, repairing or resizing your ring

Color Enhancement

Color-enhanced diamonds undergo a high pressure, high temperature (HPHT) process to alter their color. Diamonds with a slight coloring might go through this process to make them appear whiter. Slightly tinted diamonds also may be color enhanced to enrich their color, making them a distinct tone like yellow or pink.

HPHT Diamonds

The HPHT color enhancing process uses a cubic press to add a super thin layer of chemicals or plastics to the diamond’s surface. The added thin layer can make a diamond either whiter or give it a more distinct color. Colorless diamonds that undergo this treatment might begin with a yellow or brown tint, and emerge looking colorless.

Diamond sellers must legally disclose that a diamond underwent HPHT treatment because it permanently changes the diamond from its natural state. On a GIA certificate, the diamond will be described as “artificially irradiated” or “HPHT annealed.” GIA only issues treated diamonds with a permanent change.

A color enhanced diamond has less value than a natural diamond because it underwent a treatment that isn’t natural. The color enhancement is likely to wear out over time, impacting the beauty and longevity of the diamond. That’s why color enhanced diamonds are less expensive.

Should you buy an Enhanced Diamond for your Engagement Ring?

No, we don’t recommend an enhanced diamond for your engagement ring, as you can get better value for your money with a natural diamond that falls within your budget. Alternatively, a lab-created diamond can give you a beautiful look as well.

Enhanced diamonds are priced lower than natural diamonds and lab-created diamonds, but they don’t offer long-term value. Enhanced diamonds can deteriorate in quality and they’re difficult to resell.

Lab-created diamonds are an alternative to enhanced diamonds that are still less expensive than natural diamonds. Lab-created diamonds mirror natural diamonds in their physical and optical properties. They’re certified and maintain their durability and beauty over time. And they can be found at lower price points than natural diamonds. For example, this beautiful 0.95 Carat VS2 H diamond from James Allen costs $1,330.

You can also learn how to find a natural diamond within your budget by not paying too much for any given feature. For example, in our educational guides, we help readers learn how to find a clarity grade that will be eye-clean, while not paying more than is necessary. For instance, this 0.90 Carat SI1 diamond from James Allen is eye-clean and costs $3,690. It saves you $850 or 23% on a similar VVS1 clarity graded 0.90 Carat diamond from James Allen. Both diamonds are eye-clean, but one is significantly less expensive.

For a personal recommendation on a diamond that fits within your budget, reach out to our experts.

Enhanced Diamonds: Types, Pros, Cons and More (7)

James Allen James Allen is the leader in online diamond sales. Their imaging technology is the same as inspecting a diamond with a jeweler's loupe. They have the largest exclusive loose diamond inventory online and fantastic prices. They also have the nicest collection of lab created diamonds online.

What we love about them:

  • No questions asked returns within 30 days of shipment. James Allen will send you a paid shipping label to return the ring.
  • Lifetime Warranty
  • Free International Shipping
  • Free prong tightening, repolishing, rhodium plating and cleaning every 6 months
  • Provide insurance appraisals
  • One free resizing within 60 days of purchase
  • Free ring inscriptions
  • Best-in-class high quality imagery of all diamonds in stock
  • 24/7 Customer Service
  • Best-in-class packaging

Enhanced Diamonds: Types, Pros, Cons and More (8)

Enhanced Diamonds: Types, Pros, Cons and More (9)

Enhanced Diamonds: Types, Pros, Cons and More (10)

Blue Nile Blue Nile is the largest and most well known internet jewelry seller. They have a very large exclusive online inventory. Their high quality images are catching up to James Allens' and their prices are amazing.

What we love about them:

  • No questions asked returns within 30 days of shipment. Blue Nile will send you a paid shipping label to return the ring.
  • Lifetime Warranty
  • Free Shipping
  • Free prong tightening, repolishing, rhodium plating and cleaning every 6 months
  • Provide insurance appraisal
  • One free resizing within the first year of purchase
  • High quality images of about half of their diamonds
  • 24/7 Customer Service
  • 100% credit towards future upgrades (must be at least double in value)
  • Best in class fulfillment

Enhanced Diamonds: Types, Pros, Cons and More (11)

Enhanced Diamonds: Types, Pros, Cons and More (12)

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About the author

Mike Fried Mike Fried has over 25 years experience in the diamond industry working with Leo Schachter Diamonds, Moshe Namdar Diamonds, and joining The Diamond Pro in 2007. He is recognized as an industry expert and has been quoted in publications such as Us, People, Page Six, The Next Web and more.

Enhanced Diamonds: Types, Pros, Cons and More (2024)

FAQs

Are enhanced diamonds worth buying? ›

PRO'S OF PURCHASING AN ENHANCED DIAMOND

An enhanced diamond is generally going to sell for 30-50% less than a “natural” diamond of the same carat weight and quality specifications. You'll also get a colorless, eye-clean diamond which otherwise would be very expensive.

Are enhanced diamonds good or bad? ›

Are clarity-enhanced diamonds bad? No. They are just altered from their natural state. Many people will opt for clarity-enhanced diamonds just to have something unique and huge price advantage.

Are color enhanced diamonds bad? ›

There is nothing wrong with enhanced and treated loose diamonds, so long as you are made aware of it to begin with. If you choose to purchase a treated diamond, you will save money and it will look pretty nice. However, the problem comes in when enhanced loose diamonds are sold without being clearly marked.

What is the truth about clarity enhanced diamonds? ›

Clarity enhanced diamonds are natural stones that used to have eye-visible imperfections and have undergone treatment to remove them. In other words, these were diamonds that were in included clarity range (I1, I2, I3) and have had “plastic surgery” to hide or make the inclusions less visible.

How long do enhanced diamonds last? ›

The diamond clarity-enhancement process should last forever. However, using a direct torch flame on the diamond or soaking the diamond in acid will damage the enhancement.

Can clarity enhanced diamonds break? ›

The clarity enhanced diamond will still last for a while, but not as long as a diamond that hasn't undergone this type of treatment. The diamond will be highly susceptible to any type of damage, and could break if a lot of pressure is applied to it, such as during cleanings or repairs.

Why are enhanced diamonds cheaper? ›

On a GIA certificate, the diamond will be described as “artificially irradiated” or “HPHT annealed.” GIA only issues treated diamonds with a permanent change. A color enhanced diamond has less value than a natural diamond because it underwent a treatment that isn't natural.

How do you clean enhanced diamonds? ›

A mild solution of warm soapy water is an excellent way to freshen up your clarity enhanced diamond. Allow your jewelry to sit in the solution for about ten minutes. A baby toothbrush is perfect for loosening dirt and grim that has become attached to your jewelry.

What are the highest quality fake diamonds? ›

Moissanite Arguably the best faux diamond in existence, moissanite comprises silicon carbide, which means it is almost of the same hardness as a natural diamond. It also has reasonable colorlessness, although the glow is far more colorful than what you would see in a real diamond.

Can a jeweler tell if a diamond is enhanced? ›

Of course a professional can see it using a magnification like a jewelers loupe or a microscope. They can see a light tunnel from the bottom of the diamond and a flash of light - usually ultraviolet. It is important to state that an enhanced diamond cannot be sold legally without disclosing that it has been treated.

Why are clarity enhanced diamonds bad? ›

You need to understand that clarity enhanced diamonds usually originate from garbage tier quality diamonds that are unwanted and unsaleable. When these stones are polished, little attention is paid to achieving better cut quality because it doesn't make economic sense to do so.

How can you tell if a diamond is color enhanced? ›

Color enhanced diamonds are natural diamonds that have undergone a color changing process to alter their original color. They may appear whiter, or have a tinted shade that makes them appear yellow or pink.

What clarity diamonds does Cartier use? ›

So, What Makes A Cartier Diamond? At Cartier, the minimum diamond clarity you will find is VS2 and the minimum color available is H.

What is not enhanced diamond? ›

Enhanced Diamonds vs. Natural Diamonds

Natural diamonds are not enhanced in any way, so each stone exhibits its own naturally-occurring colors and characteristics. However, a diamond altered to change its color or the visibility of inclusions is referred to as an “enhanced” diamond.

When did they start enhancing diamonds? ›

The History of Enhanced Colored Diamonds

Although color enhancement was first successfully developed in 1904, it wasn't until the 1950s that enhanced diamonds became popular. This came about as the enhancement process became simple and safe enough to be done in commercial quantities.

Do diamonds devalue over time? ›

Like a car, a diamond is a depreciating asset since it loses a large portion of its value the second you buy it. Think about gold and silver. The market for them is very liquid and fungible since you can store coins, sell them at any time or even trade them later on.

What does enhanced blue diamond mean? ›

Treated blue diamonds are natural diamonds that have undergone a process called “Irradiation” that changes their body color to blue, black, yellow and others. Treated diamonds are also referred to as enhanced diamonds or treated diamonds.

What is the difference between enhanced and non enhanced diamonds? ›

Enhanced diamonds, unlike high quality natural diamonds are natural diamonds that have had very specific treatments done to them to improve their characteristics, or their natural “flaws”.

Do real diamonds lose their sparkle? ›

The chemicals that you use while doing washing and cleaning work can also be harmful to your jewellery. The oils, lotions and soaps you use everyday can leave traces that accumulate over time and create a filmy layer over the stones, making them lose their sparkle.

Do diamonds lose their sparkle over time? ›

Despite its ruggedness, diamond can lose its sparkle with oil or dust deposited on it. To maintain the sparkling of this indestructible gemstone is a tough job, but a possible one!

What's better than diamond but cheaper? ›

The most inexpensive diamond alternatives will be softer gemstones like morganites, aquamarines, and amethysts. While these gemstones are beautiful, proceed with caution when adding them to a piece of jewelry that will experience a lot of daily wear and tear like an engagement ring or wedding band.

Are lab-grown diamonds real? ›

Lab grown diamonds are as real as diamonds mined from the earth. Lab grown diamonds are identical to earth mined diamonds in every way, except that they are grown in a lab. They have the same chemical, physical, and optical properties as mined diamonds and exhibit the same fire, scintillation, and sparkle.

Why are old diamonds cheaper? ›

Antique cuts actually tend to be less expensive than modern cut earth-mined diamonds if and when you can find them. Part of this reason is because they don't require new mining and all of the associated costs that come with that.

Can cloudy diamonds be cleaned? ›

If the cloudiness of your diamond is caused by external factors, such as a greasy film or dirt, it's possible to fix it and regain its original sparkle. The way to do so is by simply cleaning the ring using warm water, soap, and ammonia-based cleaners. If you can't do it yourself, take it to a professional cleaner.

What cleaner makes diamonds sparkle? ›

Use Ammonia

Work is required to keep your diamond shining bright. Diamond jewellery can be cleaned by soaking it in a solution of one cup of warm water and one-fourth cup of ammonia for about 15 minutes.

Does rubbing alcohol clean diamonds? ›

For a quick cleaning solution for gold and diamond jewelry, try a little isopropyl alcohol. You can fill a small container with some alcohol and drop your jewelry directly into the solution. Let it soak briefly and then remove the item. The nice thing about alcohol is that it will dry clear.

Do jewelers use fake diamonds? ›

Introduction. When an object is so desirable, particularly when it can be sold for such a high price, there are always likely to be vendors seeking to imitate the item and sell it as an authentic piece. This means that diamond jewelry is often imitated and sold as a real diamond.

What is the lowest quality real diamond? ›

I3 diamond clarity represents the lowest diamond clarity grade available.

What are cheap fake diamonds called? ›

Simulated diamonds are also known as diamond simulants and include things like cubic zirconia (CZ), moissanite, and YAG. They can also include some natural clear gemstones like white sapphire, white zircon or even clear quartz.

Why is Benz diamonds so cheap? ›

Prices You Can Afford

We avoid the "middleman," which the vast majority of retailers are forced to employ. By doing so, we essentially offer our items at wholesale prices. Traditionally, there are seven steps that are involved in the supply chain of diamonds.

How can you tell if a diamond is real by blowing it? ›

Take your diamond between two fingers and blow a puff of air into it. The moisture and heat from that air will fog up your stone. If this fog dissipates quickly, your diamond is real and if it takes a while to dissipate then you need to re-evaluate your jeweler. Diamonds conduct heat and disperse it quickly.

What is the lowest diamond clarity that looks good? ›

If you're trying to decide on a clarity grade for your diamond, SI1 might be your best option. These diamonds usually appear flawless to the eye and sell for less than VS diamonds. Learn more about SI1 clarity diamonds and how to choose the right one for your engagement ring.

Is size or clarity more important in diamonds? ›

Out of the 4 C's of diamonds, the cut of the diamond is the most important. This is followed by color, clarity, and carat weight.

Why does my diamond look blurry? ›

A diamond that has not been cleaned for a while can look milky due to a buildup of film and dirt on its facets. Cloudy diamonds can also have diminished transparency from inclusions or other characteristics intrinsic to the crystal from which they are cut.

What makes a diamond sparkle more color or clarity? ›

Because diamonds reflect white light, colorless diamonds produce the best sparkle and fire. In fact, the more color a diamond has, the less likely it is to reflect white light. And as a result, will produce less sparkle. A D-color diamond is the highest quality, and will offer the greatest sparkle.

Why is my diamond turning brown? ›

Radiation damage can also occur when the diamond is deep in the Earth. However, the high temperature at which the diamond resides in the Earth is likely to cause the defects to change, reducing its green color and potentially changing it to brown or adding a yellow component [1].

What color are real diamonds under light? ›

A real diamond appears gray and white inside (brilliance) when held to the light and can reflect rainbow colors (fire) onto other surfaces. A fake diamond will display rainbow colors within the stone when held up to light.

What clarity diamonds does Tiffany use? ›

Tiffany only accepts engagement diamonds in the “colorless” and “near colorless” range on a diamond color scale. For engagement diamonds, Tiffany only accepts D, E, F, G, H and I color diamonds. Fancy color diamonds such as yellow or pink diamonds have their own color grades.

What type of diamond Costco is? ›

We guarantee that all diamonds supplied by Costco Wholesale have a clarity to be "VS2" or better and color to be "I" or better as outlined by the industry standard in the Gemological Institute of America (GIA) grading guide. Costco only sells diamond cut grades that range from Very Good to Excellent.

What kind of diamond does JLO have? ›

Costing around £4.5 million, this extremely rare 8.5ct light blue diamond is as special as Jlo herself. The blue diamond is a sleek radiant cut, set upon a platinum band with trapezoid accent diamonds.

What is a poor quality diamond? ›

A diamond with a poor clarity grade has multiple inclusions, which directly affects sparkle. Because inclusions hinder the refraction and return of light, the lower the clarity grade, the cloudier the diamond will appear.

What is a better version of diamond? ›

Moissanite has unparalleled sparkle! It has a higher refractive index than diamond, resulting in greater brilliance than diamond. Moissanite also has greater dispersion (fire) than a diamond, so you will notice more rainbow flashes of light.

What is the difference between lab grown and enhanced diamonds? ›

Diamonds are strong, but the glass-like piece that has been added to clarity-enhanced diamonds is not as durable and can break or get damaged. On the other hand, lab engineered diamonds are grown to perfection and precision.

What is the difference between natural and enhanced diamond? ›

Enhanced Diamonds vs. Natural Diamonds

Natural diamonds are not enhanced in any way, so each stone exhibits its own naturally-occurring colors and characteristics. However, a diamond altered to change its color or the visibility of inclusions is referred to as an “enhanced” diamond.

What is the most convincing fake diamond? ›

Moissanite is considered the most realistic fake diamond. The colorless, naturally occurring (but more often lab-made) mineral boasts an impressive hardness almost to the level of real diamonds. Cubic zirconia is another good option, but it's not as crystal-clear or as hard as moissanite.

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