The “mined diamonds vs lab grown diamonds” debate remains a huge topic in the jewellery world. And when shopping for a diamond, particularly for something as significant as an engagement ring, one of the biggest decisions you’ll face is choosing between a mined diamond and a lab grown diamond.
Both are real diamonds and both come in a range of qualities and prices. But what exactly sets them apart?
At first glance, they look identical. In fact, even experienced jewellers need advanced equipment to be able to tell one from the other. But whilst mined and lab grown diamonds may look the same, there are key differences when it comes to origin, cost, environmental impact, and perceived value.
In this blog, the team at Hatton Garden Diamond will walk you through the mined diamonds vs lab grown diamonds debate. We’ll explain what separates a mined diamond from a lab-grown diamond, covering everything from how they’re formed to how they perform over time, so that you can make a confident decision when choosing your next piece of diamond jewellery.
What Is A Mined Diamond?
A mined diamond is a natural gemstone formed beneath the earth’s surface over billions of years. Under extreme pressure and heat, carbon atoms bond together deep within the Earth’s mantle, eventually forming rough diamond crystals. These are extracted through mining operations and then cut, polished, and sold as gemstones.
Mined diamonds are often associated with rarity and natural beauty, which is part of what gives them their long-standing appeal.
What Is A Lab Grown Diamond?
Lab grown diamonds, also called synthetic or man-made diamonds, are created in controlled laboratory conditions using advanced technology that replicates the natural formation process outlined above. There are two main methods for creating lab diamonds:
- High Pressure High Temperature (HPHT): Mimics the natural conditions found deep within the Earth.
- Chemical Vapour Deposition (CVD): Carbon atoms form a diamond by building up slowly on a flat surface, gradually growing the stone layer by layer.
The end result is a diamond with the same properties as a mined diamond. Lab grown diamonds are not imitations, they are, quite literally, diamonds.

How Do They Compare In Appearance?
To the naked eye, there is no difference. Both mined and lab grown diamonds come in the same range of shapes, cuts, carat weights, colours, and clarity grades. They sparkle the same, they wear the same, and they are both graded using the same 4Cs: cut, colour, clarity, and carat.
At Hatton Garden Diamond, both mined and lab grown diamonds are available in a wide selection of certified options, meaning whichever you choose, you can expect a beautiful, high-quality result.
Cost Differences
One of the biggest practical differences is the price. Lab grown diamonds are generally up to 40% cheaper than mined diamonds of equivalent size and quality. This cost-saving allows clients to either increase the size or quality of their stone for the same budget, or to save money whilst still getting an impressive diamond.
The price difference is largely due to the supply process. Mined diamonds require complex extraction operations, whilst lab grown diamonds can be produced more efficiently in a controlled environment.
Environmental Impact
Another major consideration is sustainability. Mining natural diamonds involves disturbing the earth’s surface, often on a large scale, and can have environmental consequences, including soil erosion, water pollution, and disruption to ecosystems.
Lab grown diamonds are generally considered to have a smaller environmental footprint, especially when produced using renewable energy sources. That said, lab production can also be energy-intensive, so it’s important to ask how a diamond was grown and whether clean energy was used in the process.
Overall, for environmentally-conscious couples, lab grown diamonds still offer a more modern and mindful approach to diamond buying.
Ethical Considerations
The diamond industry has made significant progress in recent years, particularly with the introduction of the Kimberley Process, which aims to reduce the trade of conflict diamonds. However, concerns still exist around the ethics of mining, including labour conditions and the impact on local communities.
Lab grown diamonds offer a clear advantage in this area; they are not mined and are free from associations with conflict regions. If social impact is important to you, this might influence your decision toward a lab grown diamond.
At Hatton Garden Diamond we only supply GIA stones, so you can have peace of mind with the origin and quality of all our pieces of jewellery.
Long-Term Value
One of the most debated aspects of lab grown diamonds is their long-term value. Mined diamonds have historically been seen as more precious. Whilst most diamonds, mined or lab grown, aren’t sold for profit, mined diamonds tend to retain more of their value over time due to their rarity and longstanding place in the market.
Lab grown diamonds, by contrast, have seen price fluctuations and typically depreciate more over time. This is partly because they can be produced at scale, reducing their value in terms of rarity. If investment or resale is part of your decision-making, this is worth bearing in mind.
Sentimental Vs Symbolic Value
Many people choose mined diamonds because of their connection to nature and history. There’s something ‘extra special’ about a gem that’s been forming for longer than we’ve been here. For others, especially those with a more modern outlook, lab grown diamonds represent innovation and reflect personal values.
Ultimately, the choice comes down to what the ring symbolises for you and your partner. Whether it’s tradition, sustainability, budget, or style; the ‘best’ diamond is the one that reflects your priorities as a couple.
Certification And Assurance
Both mined and lab grown diamonds sold at Hatton Garden Diamond come with independent certification from recognised bodies such as GIA. These certificates detail the stone’s specifications, offering an additional layer of confidence with every purchase.
Whether you opt for a mined or lab grown diamond, always ensure that the diamond is certified and that the seller is reputable and transparent about sourcing and grading.
Mined Diamonds vs Lab Grown Diamonds: Which Should You Choose?
The debate between mined diamonds and lab grown diamonds is no longer about quality. Both offer beauty and durability. The real difference lies in their origin, price, and what they mean to you.
At Hatton Garden Diamond, we offer both mined and lab grown diamonds in a wide range of styles, allowing you to make a choice that reflects your story. Whether you’re drawn to the traditions of a natural gem or the modern appeal of a lab grown diamond, we’re here to guide you through every step.
Explore our collections online or visit us in-store to find the diamond that speaks to you; because every great love deserves a brilliant beginning.
Hatton Garden Diamond is proud to be the longest-standing diamond jeweller in London’s iconic Hatton Garden district. Have a question? Don’t hesitate to get in touch with our expert team today. You can call us on 020 7404 9202.
