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Lab Grown


Lab Diamonds

Lab-grown diamonds as the name suggests, are diamonds grown in a laboratory. They are made under similar conditions as mined diamonds, which are formed within the Earth’s surface.

Lab diamonds have become popular in recent years but have existed since the mid-1950s. First introduced by General Electric, these diamonds were of poor aesthetic quality and more suited to industrial use. Breakthroughs in technology mean lab diamonds now rival the beauty and quality of mined diamonds at a fraction of the price.

There are two methods for creating a lab-grown diamond. Chemical Vapour Deposition (CVD) and High-Pressure High-Temperature (HPHT). Both take a diamond seed and put it through conditions that replicate the environment beneath the Earth’s crust. What emerges is a diamond with the same beauty, chemical composition and properties as any mined stone.

The HPHT process starts with a diamond seed deposited in pure carbon. After exposure to intense pressure and heat, the carbon melts and a rough diamond forms around the seed. After cooling, it is ready to work on by cutting and polishing before being released into the diamond market.

The CVD process begins with a diamond seed deposited into a sealed chamber. It is then heated to an incredibly high temperature and filled with carbon-rich gas. Under this heat, the gas ionises breaks down, and the molecules land on the diamond seed. This building process continues for weeks, crystalising until a complete, rough diamond forms. This diamond is ready to be professionally cut, polished, and graded before entering the diamond market.

Like mined diamonds, lab-grown diamonds can have natural imperfections and inclusions. So we apply the same grading criteria used for mined diamonds, the 4 C’s.


Diamond colour grades state the absence of colour in a stone. From colourless ( D ) to light yellow ( Z ), the diamond goes from bright and icy to showing a yellow-brown tint.


The carat of a diamond is an indicator of weight but can also reflect the size of the diamond. You can have two diamonds of the same carat, but one may look bigger based on the shape or dimensions. Typically speaking, carat weight will give a good idea of the overall diamond size.


Clarity grades the presence and prominence of natural birthmarks within and outside the diamond. Both lab and mined diamonds have imperfections, usually graded under 10x magnification. Flawless diamonds, without any internal or external blemishes, are exceptionally rare. As such, these are priced much higher than other clarity grades.


A diamond cut is the most important factor when choosing a diamond. The highest grade for mined diamonds is Excellent by GIA and Ideal for lab-grown by IGI. These diamonds have exact angles, symmetry and proportions with the best polish achievable by a diamond cutter. The result is a diamond with unmatched fire and brilliance – otherwise known as sparkle.

It is important to remember that lab-grown diamonds are 100% real diamonds. They are visually, chemically and structurally identical to mined diamonds but cost significantly less. A lab-grown diamond can be 40-60% cheaper than a mined diamond with matching specifications.

Lab-grown diamonds are more sustainable, and solar technology is used to further sustainability efforts. They are better for the Earth, as there are no intrusive, destructive processes needed to create them. For those with ethical and sustainable concerns when choosing a diamond, lab-grown offers greater certainty.

Finally, lab-grown diamonds will last a lifetime. Their beauty does not fade and are as everlasting as their mined counterparts. There is no way to distinguish between the two, even to trained eyes without using specialist equipment.


Lab Diamonds