What "Conflict-Free" Actually Means
"Conflict diamonds" (often called blood diamonds) are rough diamonds sold by rebel movements to pay for wars against legitimate governments. In the 1990s they funded civil wars in Sierra Leone, Angola and elsewhere. That pressure led to the Kimberley Process Certification Scheme, which came into force in 2003.
- Member countries can only trade rough diamonds with other members.
- Every shipment of rough crosses the border in a sealed container with a Kimberley Process certificate.
- In the US, the Clean Diamond Trade Act (2003) makes that certificate a legal requirement for rough imports.
- Further down the chain, dealers add a System of Warranties statement to their invoices, a written pledge that the stones came from Kimberley Process-compliant sources.
So when a retailer says its diamonds are "100% conflict-free," it usually means the stone came through the Kimberley Process system, which US law already requires for rough imports.
What the Kimberley Process Doesn't Cover
Critics have pointed at the same gaps for years. Global Witness, one of the groups that pushed for the scheme, quit it in 2011.
- Only rebels count. Violence or forced labor by a state's own security forces falls outside the rule. Zimbabwe's Marange fields are the case everyone cites. Human Rights Watch reported that soldiers killed more than 200 people there in 2008. The Kimberley Process still cleared Marange diamonds for international sale in 2010.
- Labor and safety. Certification doesn't look at wages, child labor or conditions in small-scale mines.
- Environment. Nobody assesses land disruption or water use at the mine.
- Mixed parcels. Rough from many mines gets combined before cutting, so a certificate vouches for a whole parcel and can't point to the mine your diamond came from.
Russian diamonds still pass Kimberley Process certification, since Russia remains a member. The US, EU and the rest of the G7 ended up banning them separately in 2024.
Going Beyond the Minimum
For a diamond you'd call ethically sourced, look for one that was tracked from the mine.
- Mine-of-origin programs. Brilliant Earth, for one, keeps stones from Botswana, Namibia, South Africa and Canada sorted by country instead of mixing them into general parcels. Some miners run similar programs for their own production.
- Blockchain tracking. De Beers runs Tracr, which records a diamond's journey from mine to market. Coverage depends on the stone, so ask whether a specific diamond is tracked.
- Recycled diamonds. A diamond that's already been set and sold once adds no new mining. Its original source is usually unknown, though.
Before paying extra for a documented origin, compare the stone with others of the same grades. Price comes mostly from the 4Cs, and some retailers charge a premium for origin on top. Our guide to diamond certificates explains what the grading report does and doesn't tell you.
What the Big Online Retailers Promise
Every retailer we track sells natural diamonds through the Kimberley Process. The table shows what the ones with published sourcing pages add on top, as checked on their own sites in November 2026.
| Retailer | What they state | Origin you can choose |
|---|---|---|
| Blue Nile | Full Kimberley Process compliance and "100% conflict free." Parent company Signet is a certified Responsible Jewellery Council member | No. Diamonds come from mines in Australia, Africa and Canada, and Blue Nile calls traceability a goal it's still pursuing |
| James Allen | Now part of Blue Nile, so the same Signet policy applies | Same as Blue Nile |
| Brilliant Earth | A "Beyond Conflict Free" standard with chain-of-custody checks. Stopped selling Russian diamonds in February 2022 | Yes. Stones are tracked by origin (Botswana, Namibia, South Africa, Canada), plus a separate Angola program |
Ritani, Brilliance and Rare Carat aren't in the table because we couldn't confirm their sourcing policies. If origin matters to you, ask their support team before you buy. The checklist below has the questions to ask. All of these retailers also sell lab-grown diamonds.
Lab-Grown Diamonds: Conflict-Free by Definition
A lab-grown diamond is real diamond, grown by HPHT or CVD in a few weeks. With no mine involved, it can't be a conflict diamond, and it costs far less. At 1 carat, lab-grown sells for a small fraction of the natural price. See today's numbers on our 1 carat diamond price page.
Growing diamonds uses a lot of electricity, and most come from India and China, where the power mix and working conditions vary by factory. Lab-grown also holds very little resale value. Our natural vs lab-grown comparison covers price, resale and impact side by side, and HPHT vs CVD explains the two growing methods.
Buyer Checklist: Questions to Ask
- Is this diamond sold under the Kimberley Process and System of Warranties? (The answer should be yes.)
- Do you know which country, or which mine, this specific stone came from? Can you document it?
- Is it tracked on a blockchain platform such as Tracr?
- Do you sell Russian-origin diamonds, including ones cut in other countries?
- Does a documented origin cost more, and how much more than a comparable stone with the same grades?
- If it's lab-grown, who grew it and where?
Once you've settled on a sourcing standard, compare the same grades across retailers on Diamond Watcher. Our diamond price pages show how far apart the retailers' medians are for the same carat weight.