How Many Red Diamonds Exist in the World? The Real Count

Reviewed August 2026 against the Natural Diamond Council’s historic-diamond archive, Rio Tinto’s Argyle Pink Diamonds Tender records, and Kimberley Process rough-diamond production statistics.

Try it: Try It: What Would a Red Diamond This Size Sell For? →

Table of Contents

How Many Red Diamonds Are There in the World?

Fewer than 30 natural red diamonds over 0.5 carats are documented in gemological and auction records worldwide, according to the Natural Diamond Council. That count covers only stones large and clean enough to reach a public grading report or an auction catalog — smaller, uncut, or privately held reds are not centrally tracked anywhere, so the true historical total of red diamonds ever recovered is higher and cannot be pinned to an exact figure. Almost every confirmed stone traces back to a single mine in Western Australia that stopped producing in November 2020, which is why this number has barely moved since.

Try it: estimate what a red diamond of a given carat weight would fetch, based on the four confirmed sales cited below.

Red diamonds are not colored by a trace element the way blue diamonds pick up boron or yellow diamonds pick up nitrogen. Their color comes from a distortion in the crystal lattice itself — a structural effect from extreme pressure during formation deep in the mantle, rather than a chemical impurity — which is part of why they are harder to explain and rarer to reproduce than any other fancy color, per the Natural Diamond Council’s own account of the science.

Where Are Red Diamonds Found?

The honest answer is: mostly nowhere, anymore. The Argyle mine in the East Kimberley region of Western Australia supplied 90% to 95% of the world’s pink, red, and violet diamonds during its 37 years of operation, from its 1983 commissioning to its final day of mining on 3 November 2020, according to both the Natural Diamond Council and Mining Technology. Argyle produced more than 865 million carats of rough diamond across its operating life, yet fewer than 1% of its gem-quality output ever came out pink or red — the mine did not so much supply an existing red-diamond market as create one from scratch.

Outside Argyle, diamond-bearing regions in Brazil, southern Africa, Russia, and Canada have each produced diamonds with red or reddish secondary color over the decades, but no single deposit besides Argyle has ever produced them in more than isolated, one-off finds. South Africa’s Cullinan mine — the source of the largest gem-quality rough diamond ever recovered, covered in our biggest diamond discovery report — has never produced a red diamond of comparable fame. With Argyle closed and no replacement deposit identified, there is currently no mine anywhere actively producing red diamonds at more than an occasional, unpredictable rate.

Red Diamond Statistics at a Glance

The two tables below use only figures that trace to a named source. No table claims a country-by-country count of red diamonds, because no organization publishes one — the industry tracks color-diamond auction lots and mine-level rough production, not a running census of red stones by country.

Confirmed Red Diamond Auction Sales

2024 Rough Diamond Production by Top Producer (for scale, not red-diamond-specific)

That $97 global average per carat, against the $2.7 million per carat the Argyle Phoenix commanded in 2024, is the plainest way to see what “rare” means in dollar terms: a documented red diamond has sold for roughly 27,800 times the average price of a carat of rough diamond mined worldwide that same year.

Red Diamond Price: What They Actually Sell For

Every confirmed red diamond sale on public record has gone through Christie’s or Phillips, and every one has set or matched a record at the time. The Hancock Red opened the modern market in 1987 at $880,000 for 0.95 carats — $926,316 per carat. By 2014, the 2.09-carat Moussaieff Red sold in Hong Kong for $5.1 million, or $2.44 million per carat. Christie’s Geneva broke the price-per-carat record again in November 2020 with a 1.05-carat fancy purplish-red diamond set in a Graff ring, selling for the equivalent of $2.64 million per carat. The current record belongs to the Argyle Phoenix, a 1.56-carat stone that sold at Phillips Geneva in 2024 for about $4.2 million — $2.7 million per carat, the highest price per carat ever paid for a fancy red diamond, per the Natural Diamond Council. For the mechanics behind these prices — cut, clarity, hue purity, and provenance — see our red diamond price factors breakdown.

Are There More Red Diamonds Left to Find?

Some. New red diamonds still surface, but at a rate closer to one every few years than an annual event, and they come from two sources: sporadic finds outside Argyle, and stones already mined that resurface from private collections or estates onto the auction market. The Argyle Phoenix itself is an example of the second kind — it was recovered during Argyle’s operating years and only reached record-setting public sale in 2024, four years after the mine closed. Because no active mine anywhere is currently producing red diamonds at scale, nearly all future “new” red diamonds on the market will likely be existing stones changing hands rather than freshly mined ones, unless a new deposit with Argyle’s rare geology is identified.

That also answers a related question directly: red diamonds have not stopped being found because the supply ran out in the ground — the deposit best suited to producing them ran out first. Diamond exploration elsewhere continues, including through the kind of remote geological screening covered in the exploration section below, but no company has yet announced a deposit with Argyle’s specific combination of pressure history and color-producing structural defects.

How Red Diamond Mining Compares to the Rest of the Industry

Ordinary rough diamond production is a volume business measured in tens of millions of carats a year at double-digit dollar values per carat. Red diamonds sit at the opposite extreme: single stones, weighed in fractions of a carat, priced in the millions per carat. Namibia’s marine and alluvial deposits produced the highest average value in 2024 at $417 per carat, the top of the conventional market, per the National Diamond Syndicate’s reporting of Kimberley Process data. Even that figure is roughly 6,500 times smaller than the $2.7 million per carat the Argyle Phoenix realized the same year.

Modern Exploration: Satellite Intelligence for Rare Deposits

Because red-diamond-producing geology cannot be predicted from the surface alone, exploration teams now lean on remote sensing to narrow down which kimberlite and lamproite pipes are worth the cost of drilling, rather than trenching every candidate structure in the field. Satellite-based mineral detection uses multispectral and hyperspectral imagery to flag alteration halos and structural targets across an entire district before any ground crew mobilizes, cutting both cost and the physical footprint of early-stage exploration.

Farmonaut’s platform builds on that approach with mineralized heatmaps, prospectivity ranking, and 3D subsurface modeling designed to shortlist targets objectively rather than by field intuition alone. For a deeper technical walkthrough of how satellite-driven 3D prospectivity mapping is applied to rare gemstone and deep-deposit targets, see the 3D mineral prospectivity mapping guide. None of this changes how many red diamonds exist today, but it is the method by which any future deposit with Argyle-like geology would most plausibly be identified before a single drill hole is sunk.

Satellite & AI in Mining: Video Library

The videos below cover satellite-driven mineral exploration, AI-assisted site screening, and how modern intelligence platforms support both early-stage detection and post-discovery site management across mining regions including Africa, North America, and Australia.

Frequently Asked Questions

How to Check the Current Count Yourself

Because the confirmed count changes only in small, irregular steps, it is worth knowing exactly where to look rather than trusting any single article — including this one — to stay current forever. The following four checks make up the actual method behind the numbers cited above:

• GIA’s published lab notes. The Gemological Institute of America periodically publishes notes on new “Fancy Red” and modified-red (purplish-red, brownish-red, orangy-red) grading reports in its Gems & Gemology journal, including the Spring 2025 note on the Smithsonian’s Winston Red. A new entry there is the earliest public sign the confirmed count has grown.
• Auction house archives. Christie’s, Sotheby’s, and Phillips post full lot descriptions for their spring and autumn jewelry sales; searching “red diamond” or “purplish-red diamond” across their published results surfaces new sales as they happen.
• Rio Tinto’s archived Argyle Pink Diamonds Tender catalogs (2007–2020). Since Argyle’s closure ended the annual tender, no new supply is being added from this source — the historical catalogs are now a closed, checkable record rather than a moving target.
• The Kimberley Process annual global summary, published roughly six months after each reference year at kimberleyprocessstatistics.org. It does not break out red diamonds specifically, but it is the primary check on how total rough diamond production is trending, which is the context every red diamond figure above sits inside.

The Bottom Line

The number of confirmed red diamonds in the world is small enough to name most of them individually, and it has stayed that way since the one mine responsible for nearly all of them closed in 2020. What moves now is not new mining supply but re-sales, re-discoveries, and the occasional isolated find elsewhere — which is exactly why the method in the section above matters more than any single count frozen at the moment this was written.