How Are Lab Grown Diamonds Made?

Diamonds may be forever in the “James Bond” universe, but that doesn’t mean they have to take millions of years to form deep underground. Thanks to modern science, we can now grow diamonds in a lab, creating stones that are just as dazzling as their natural counterparts.

But, do they actually look just as good as the real thing? And more interestingly, how are they actually made?

 

The Science Behind the Sparkle

 

Straight off the bat, it’s important to get one thing straight – lab-grown diamonds are real diamonds. They look just as good as “the real thing”, because they’re the same – they’re just made by means of different processes, one of which is natural and another that’s manufactured.

Lab-grown diamonds have the same chemical composition, structure and sparkle as natural diamonds, but instead of forming in the Earth’s crust over vast periods of time, they’re created in a controlled environment in a matter of weeks.

Scientists have found a way to replicate the intense heat and pressure that nature provides, resulting in diamonds that are virtually indistinguishable from mined ones. Unsurprisingly, this has had a pretty big influence on the relative value of diamonds – when all we had were naturally formed diamonds, they were more rare and scarce, but now, they can be manufactured far more easily, creating way more supply.

The other important thing to know about lab-grown diamonds is that there are two main methods used to create lab-grown diamonds: High Pressure High Temperature (HPHT) and Chemical Vapour Deposition (CVD). Both techniques have their own ways of mimicking nature’s process, but ultimately, the end result is the same – a stunning, real diamond.

 

 

High Pressure High Temperature (HPHT) Diamonds

 

The HPHT method is the closest thing to what happens deep underground. A tiny diamond seed (often a sliver of an existing diamond) is placed in a special press that applies intense heat (around 1,500°C) and extreme pressure (over 1.5 million pounds per square inch). Under these conditions, carbon atoms begin to bond around the seed, slowly forming a larger diamond crystal.

Once the diamond has reached the desired size, it’s carefully cooled and then cut and polished just like a natural diamond. This method was the first successful way to grow diamonds in a lab and is still widely used today.

 

Chemical Vapour Deposition (CVD) Diamonds

 

CVD is considered the more modern approach, and for that reason, it works quite differently.

Instead of using extreme pressure, this method starts with a small diamond seed placed inside a chamber filled with a carbon-rich gas (like methane). The chamber is then heated to about 800-1,200°C, and a plasma is created using microwaves or lasers. This breaks down the gas, allowing carbon atoms to rain down and bond layer by layer onto the diamond seed, gradually growing a diamond.

The CVD process takes a few weeks and allows for greater control over the diamond’s characteristics, like size and clarity. Many high-quality lab-grown diamonds today are made using this method.

 

Are Lab-Grown Diamonds Any Different to “Real” Diamonds? 

 

If you’re wondering whether lab-grown diamonds are the same as mined ones, the answer is a resounding yes. Both are made of pure carbon and have the same physical, optical and chemical properties. Even expert gemologists need specialised equipment to tell them apart. So, for all intents and purposes, they’re the same.

The biggest differences, however, are their origin and price.

Lab-grown diamonds are often more affordable than natural ones, because they don’t require costly mining operations. They’re also seen as a more ethical and environmentally friendly choice, making them increasingly popular for engagement rings and fine jewellery.

 

The Future of Lab-Grown Diamonds

 

As technology continues to advance, lab-grown diamonds are becoming even more refined, with new methods allowing for larger and higher-quality stones. They’re also being used in industries beyond jewellery, like electronics and medical research, thanks to the fact that they’re incredibly hard and boast excellent conductivity.

So, whether you’re looking for an eco-friendly engagement ring or just fascinated by the wonders of modern science, lab-grown diamonds are proof that you don’t need to wait millions of years for something brilliant. Science can now speed up nature’s magic – and the results are truly dazzling.

With lab-grown diamonds on the market and so really available, these precious gems are sure to become more than just “a girl’s best friend”, as Marilyn Monroe so sweetly asserted. Indeed, they’re going to be a far more easily accessible stone that we can all love and enjoy.