Lab-Grown vs Mined Diamonds: Comparing the Supply Chains
The differences between lab-grown and mined diamonds aren't simple, and it's worth being precise rather than reaching for easy answers. Here's what separates the two supply chains, and where the picture is more complicated than the marketing suggests.
Land and water
Diamond mining is a physically disruptive process. Open-pit mines create large-scale land disturbance, require significant water use and generate substantial waste material. Kimberlite pipe mining moves hundreds of tonnes of earth per carat. Alluvial mining disrupts riverbanks and riverbeds.
Lab-grown diamonds require no excavation. They're produced in facilities that, at their best, run on renewable energy. Even where conventional energy is used, the land change is absent. For buyers who care about land use and biodiversity, that difference is material.
Labour and conflict
The Kimberley Process, which certifies mined diamonds as conflict-free, has faced criticism for its limited scope. It was designed to prevent diamonds funding rebel movements. It doesn't address labour conditions, environmental practices or community displacement. Some mined diamonds come from operations with strong environmental and labour records. Others don't.
A lab-grown stone's supply chain is shorter and its origin is documented, so the question doesn't arise in the same form.
Where the picture is more complex
Some mining operations employ large numbers of people in communities with few alternative income sources. Removing demand for mined diamonds has economic consequences for those communities. That's a real consideration, and one reason this comparison isn't one-sided.
Lab-grown production has an energy footprint of its own, and where that energy comes from matters. Labs running on coal-generated electricity have a larger carbon footprint than those running on renewables. The industry is moving toward cleaner energy, but not uniformly.
Making an informed choice
What the two supply chains differ on is documented: excavation and land change on one side, energy source and production scale on the other. Which of those weighs more is yours to decide.
At Una Diamond, every ring is made with a lab-grown diamond. We donate 1% of every sale through our partnership with Forever Projects, supporting women and children in Tanzania.
If you'd like to explore rings, browse our lab-grown diamond rings or read our complete guide to lab-grown diamonds.
Una Diamond Engagement Rings
Every stone is lab-grown, every ring solid gold or platinum:
- Solitaire rings
- Oval cut rings
- Emerald cut rings
- Browse all rings
- The Georgina, an oval-cut solitaire