Sustainability

How do natural and lab-grown diamonds compare on sustainability? 

Wondering what can make a diamond more sustainable? See how lab-grown and natural diamonds compare in terms of caring for the planet

Contributor | 7 min read
Published: March 18, 2026 | Last updated: March 18, 2026
Difference between lab grown and natural diamonds

Whether you’re in the market for a new piece of jewellery or just curious about the sustainability credentials of natural diamonds versus laboratory-grown alternatives (LGDs), you’re in the right place.  

Considering picking up a tennis bracelet crafted from LGDs to gift your best friend on her upcoming birthday? Has an evil-eye pendant studded with lab-grown diamonds caught your eye? We get it — the cost-to-value ratio can make LGDs quite the tempting choice. As the popularity of LGDs continues to soar in India, a growing number of us feel the urge to maybe consider LGDs over natural diamonds. 

But… like us, does the topic of sustainability and diamonds make you feel overwhelmed? We agree, it is a pretty weighty conversation, with plenty of information to make sense of.  

LGDs, for example, are often touted as the ‘more sustainable’ choice, but the reality is more complex. We’ll break down the facts behind lab grown vs natural diamond choices, what a more sustainably sourced diamond looks like and how the natural diamond industry is stepping up in a major way, as more and more of us pay closer attention to responsible sourcing, transparency and sustainability. 

It’s also worth bearing in mind that the topic of sustainability and diamonds is a whole different ballgame to ethically-sourced diamonds — the latter prioritises human rights and fairness, while sustainability focuses on conservation efforts to protect the environment. But we’ll get to all that shortly…  

What makes a diamond truly sustainable?

The simple answer? When you buy more sustainable diamonds, you’re choosing a more environmentally responsible option – one that seeks to prioritise environmental protection and resource conservation (looking after our planet, basically). We have good news: more people than ever before (including younger shoppers!) are paying attention to ethical diamond jewellery and conscious luxury.  

It means the people creating or sourcing diamonds have the utmost respect for the planet and its people. So that usually involves things like cutting down on carbon emissions, embracing renewable energy and making sure that people and the planet benefit wherever possible. From rewilding programs to preserving biodiversity, the aim of the game is for the impact on Earth to be as minimal and respectful as possible.   

One of the most exciting recent shifts in diamond sustainability initiatives is traceability. Traceability means being able to trace a diamond’s provenance and journey from its source right to your jewellery box; knowing which country it originated from, which mine it was recovered from, and where it was cut or polished.  

As you’d imagine, knowing this information is something of a game-changer, since transparency around where a diamond comes from — and the conditions it was recovered or made in — helps us choose diamonds linked to more positive environmental initiatives and responsible mining practices.  

While interest in eco-friendly diamonds has been on the uptick, it is important to keep in mind that genius marketing strategies, even those centred on sustainability aspects (especially with respect to lab-grown diamonds), may not always be factually correct. Awareness is key!

The environmental impact of natural and lab-grown diamonds

 Environmental impact of lab-grown diamonds

As we mentioned earlier, LGDs are often touted as the ‘sustainable’ choice since they’re not directly mined from the ground. But, producing a gemstone in a matter of weeks (that would otherwise naturally take millions or billions of years) requires a lot of energy.

The natural cost of diamonds

For starters, large amounts of electricity powered by fossil fuels such as coal are needed to power machinery and create the conditions in which LGDs are made (either using chemical vapour processes, or high pressure and temperatures). Carbon emissions are usually unmonitored too, which can lead to chemical contamination of the water used during this super-fast diamond turnaround.  

And demand-driven lab-grown diamonds can be tough on the environment in other ways – the marketing of ‘eco-friendly’ LGDs has been called into question in the recent past, as some of their sustainability claims can’t always be substantiated. For example, most LGDs are produced in India (most notably in Gujarat) and China1, where the majority of facilities don’t use sustainable energy sources. On top of that, other mined materials like iron, nickel and cobalt are usually part of the process, meaning LGDs aren’t technically ‘mining-free’ gems either.

Sadly, despite the energy-heavy nature of LGD production, efforts to cut down on things like greenhouse gases and their carbon footprint have been limited across the industry, which is why talk of ‘sustainable’ or ‘planet-friendly’ LGDs shouldn’t be taken at face value. It’s important to do your own research into the provenance of any lab-grown diamond, just as much as you should with a natural diamond.

Environmental impact of natural diamonds

In recent years, plenty of diamond companies have seriously stepped up their game, putting in real effort (not to mention resources) into protecting the environment and ensuring their mining practices are held to higher sustainability standards.  

We’re talking wildlife conservation projects, land rehabilitation and long-term plans and commitments to make things as sustainable as they can possibly be. And it’s not just about the land; local communities can benefit hugely too. A large proportion of the rough diamond value typically stays local, supporting employment, businesses2 and the families living in the region, as well as benefitting systems like schools, healthcare and local infrastructure, with workers protected by strict labour regulations.  

Ever heard of the Kimberley Process Certification Scheme3 (KPCS)? Named after the South African city it originated in, it’s an initiative set up to stop any rough diamonds being traded to fund warfare.  

The system brings together governments, diamond-producing countries, mining companies and industry bodies, alongside civil society organisations, all working collectively to monitor and regulate the global rough diamond trade. 

Initially focusing on countries like Sierra Leone, Angola and the Democratic Republic of the Congo, the KPCS now includes over 80 participating countries. It requires strict documentation and tracking of diamonds to ensure they’re conflict-free all the way from mine to market.

Zebras in the wild

Why sustainability matters for diamond buyers 

While natural diamond recovery isn’t completely impact-free, with responsible practices and real, genuine accountability, the natural diamond industry is proving that luxury and sustainability commitments really can go hand-in-hand. After all, we’re not just looking for sparkle when we shop for diamonds — we want a diamond that reflects our core values, which can leave a positive mark on the world.   

Supporting natural diamonds means investing in more than just a pretty piece of jewellery. It amounts to investing in emotional resonance and putting your faith in gemstones that you hope, one day, will turn into prized legacy-laden heirlooms. This is why it’s even more pivotal to back ethical trade, uplift communities, protect ecosystems and own a piece of the Earth’s history with sentimental and more sustainable value.  

While lab-grown diamond alternatives may seem like the simpler or more affordable choice, many can still lack transparency around their environmental credentials, and can’t deliver the same level of meaningful impact that natural diamonds from a responsible company can.  

The take-home? Whether you opt for a natural diamond or an LGD, it’s worth doing your homework to ensure the values of its supplier sit just as pretty with you as your jewellery does.

Sources:

  1. GJEPC India, Global LGD annual output to touch 19.2 million carats by 2030 ↩︎
  2. Naturaldiamonds.com, Supporting communities ↩︎
  3. Kimberleyprocess.com, Ending conflict diamonds, ensuring responsible trade ↩︎