Lab-Grown Diamonds: Everything You Need to Know
Lab-grown diamonds have become an increasingly popular choice for engagement rings and fine jewellery. They offer the same beauty, brilliance and durability people expect from diamonds, while being created using advanced technology rather than formed naturally deep within the earth.
If you are considering a lab-grown diamond, understanding how they are made, how they compare with natural diamonds and what to look for can help you choose with confidence.
What Is a Lab-Grown Diamond?
A lab-grown diamond is a real diamond created in a controlled environment using advanced technology.
It has the same essential crystal structure and optical properties as a natural diamond. This means a lab-grown diamond can offer the same sparkle, hardness and appearance as a natural diamond.
The key difference is origin.
Natural diamonds form deep within the earth over extremely long periods of time, while lab-grown diamonds are created in a laboratory environment over a much shorter period.
How Are Lab-Grown Diamonds Made?
There are two main methods used to create lab-grown diamonds:
HPHT
HPHT stands for High Pressure High Temperature.
This process recreates the extreme pressure and temperature conditions in which natural diamonds form deep within the earth.
A small diamond seed is placed under controlled conditions, allowing carbon to crystallise around it and form a diamond.
CVD
CVD stands for Chemical Vapour Deposition.
In this process, a diamond seed is placed inside a chamber containing carbon-rich gases.
The carbon gradually builds around the seed layer by layer until a diamond crystal is formed.
Both methods can produce high-quality diamonds suitable for engagement rings and fine jewellery.
Are Lab-Grown Diamonds Real Diamonds?
Yes.
Lab-grown diamonds are real diamonds.
They are not diamond simulants such as cubic zirconia or moissanite.
Because they share the same fundamental material as natural diamonds, they can display the same brilliance, fire and durability.
Specialist equipment may be needed to reliably identify whether a diamond is lab-grown or natural.
Lab-Grown vs Natural Diamonds
The biggest difference between the two is their origin.
Natural Diamonds
Natural diamonds form deep within the earth under extreme heat and pressure.
They are valued for their natural formation, rarity and history.
Lab-Grown Diamonds
Lab-grown diamonds are created using advanced technology in controlled environments.
They can offer impressive size and specifications at a lower price point than many comparable natural diamonds.
Both can be beautiful choices. The right option depends on what matters most to you.
Do Lab-Grown Diamonds Look Different?
To the eye, a high-quality lab-grown diamond can look virtually identical to a natural diamond.
The appearance of any diamond depends on factors such as:
- cut
- colour
- clarity
- carat weight
- proportions
- symmetry
A well-cut lab-grown diamond can offer exceptional brilliance and sparkle.
Are Lab-Grown Diamonds Durable?
Yes.
Diamonds are known for their exceptional hardness, and lab-grown diamonds share this property.
This makes them suitable for engagement rings and jewellery designed for regular wear.
As with any fine jewellery, proper care is still important to help protect the setting and keep the diamond looking its best.
Understanding the 4Cs
Lab-grown diamonds are evaluated using the same familiar 4Cs used for natural diamonds.
These are:
- Cut
- Colour
- Clarity
- Carat
Cut
Cut has a major influence on a diamond's sparkle.
A well-cut diamond reflects light more effectively and can appear brighter and more brilliant.
Colour
Colour grades indicate how colourless the diamond appears.
The ideal grade depends on personal preference, budget and the metal used in the ring.
Clarity
Clarity describes natural characteristics inside or on the surface of the diamond.
Many inclusions are extremely small and difficult to see without magnification.
Carat
Carat refers to diamond weight.
Higher carat weight usually means a larger stone, but dimensions and proportions also affect how large a diamond appears.
Why Do People Choose Lab-Grown Diamonds?
There are several reasons why customers may choose a lab-grown diamond.
More Diamond for the Budget
Lab-grown diamonds can often allow customers to choose a larger carat weight or higher specifications within the same budget.
This can be attractive for someone who prioritises visual impact.
More Flexibility
Because pricing can be more accessible, customers may have greater flexibility when choosing:
- carat weight
- colour
- clarity
- shape
- setting
Modern Choice
Some customers simply prefer a diamond created using modern technology.
The right choice is personal and should reflect your priorities.
What Diamond Shapes Are Available?
Lab-grown diamonds are available in many popular shapes.
These include:
- Round
- Oval
- Pear
- Emerald
- Radiant
- Cushion
- Marquise
- Princess
- Asscher
- Heart
Each shape creates a different look and can influence how large the diamond appears on the finger.
Which Shape Gives the Most Sparkle?
Round brilliant diamonds are designed to maximise brilliance and remain one of the most popular choices.
However, radiant, oval, pear and cushion diamonds can also offer strong sparkle.
The quality of the cut and proportions can be just as important as the shape itself.
Are Lab-Grown Diamonds Certified?
Many lab-grown diamonds are independently graded and certified.
A diamond grading report can provide information including:
- carat weight
- colour
- clarity
- measurements
- proportions
- polish
- symmetry
At Tevon, certification helps provide customers with clear information about the diamond they are choosing.
What Should You Look for When Buying a Lab-Grown Diamond?
Do not focus on just one specification.
Instead, consider the diamond as a whole.
Prioritise Cut and Proportions
A beautifully cut diamond can appear brighter and more impressive than a stone with higher specifications but weaker proportions.
Check the Certificate
Review the grading information carefully so you understand what you are purchasing.
Think About the Setting
The ring setting can dramatically change the overall appearance of the diamond.
Choose the Right Shape
Different shapes suit different personal styles, hand shapes and settings.
Stay Within a Comfortable Budget
Choose a diamond and ring combination that feels right for you rather than chasing specifications you may not visually notice.
Choosing the Right Metal
Lab-grown diamonds can be paired with a variety of metals.
Yellow Gold
Creates a warm and timeless look.
White Gold
Offers a bright, contemporary appearance.
Rose Gold
Provides a soft, romantic tone.
Platinum
Offers a naturally white finish and a premium feel.
The metal can strongly influence the overall appearance of the finished ring.
Are Bigger Lab-Grown Diamonds Always Better?
Not necessarily.
A larger diamond can create more visual impact, but proportions, cut quality and setting design all matter.
A slightly smaller diamond with attractive proportions may look more balanced and elegant than a larger stone with less desirable proportions.
The best diamond is not simply the biggest one. It is the one that looks beautiful in the finished ring and suits your preferences.
How to Care for a Lab-Grown Diamond
Lab-grown diamond jewellery should be cared for in the same way as other fine diamond jewellery.
Helpful habits include:
- remove jewellery during heavy manual work
- avoid unnecessary contact with harsh chemicals
- store pieces separately to reduce scratching
- clean jewellery regularly
- periodically check the setting and prongs
Regular care helps maintain both the diamond's appearance and the security of the setting.
Should You Choose Lab-Grown or Natural?
There is no single answer that suits everyone.
A natural diamond may appeal to someone who values natural origin and rarity.
A lab-grown diamond may appeal to someone who prioritises size, specifications, modern production and value.
The best decision is the one that matches your own priorities.
Choosing a Lab-Grown Diamond With Tevon
At Tevon, we believe choosing a diamond should feel clear and personal.
Our lab-grown diamond jewellery is designed to combine beautiful stones, thoughtful proportions and timeless settings.
Whether you are looking for a classic solitaire, an oval engagement ring or a design with additional sparkle, understanding the diamond helps you make a more confident choice.
Explore our lab-grown diamond engagement rings and discover a design created for your story.