Established 2013 Argyle Pink Diamond Collecting
Own One Of The World’s Most Revered Gemstones
Start or grow your collection of Argyle Pink Diamonds with Unique Asset Acquisitions — independently certified stones, secure Hatton Garden storage, and a supply that can never be replaced.
- Argyle Mine closed permanently in 2020 — no comparable source has since emerged
- Every diamond independently certified by GIA, IGI or HRD Antwerp
- Secure storage available through our Hatton Garden vaulting partner
- Guided support from initial enquiry through to acquisition and beyond
Industry Connections
In The Press
Argyle Pink Diamonds continue to attract coverage across major financial and lifestyle press, cited for their rarity, resilience and appreciation as a physical, finite asset.
Argyle pink tender diamonds have outperformed all major equity markets over the past two decades, achieving double-digit price growth in that time.
Financial Times In another decade the Argyle Pink Diamond will emerge as the new Fabergé egg, the thing jewellery myths are made of.
Sky News Australia With the closure of the Argyle diamond mine, we have seen a continued appreciation in the value of these stones. Currently, there are very few sources of pink diamonds in the world, which has only served to heighten both their rarity and desirability.
Financial Times Demand for Argyle pink diamonds has continued unabated. Rarity, uniqueness and a finite supply has driven the strong value appreciation we have seen, and continue to see.
Daily Mail
Key Collection Factors
Argyle Pink Diamonds are shaped by permanent scarcity. A snapshot of the factors driving the market:
2020
Argyle Mine closure, ending the world’s primary source of natural pink diamonds
90%+
Share of global pink diamond production lost forever with the mine’s closure
+116%
Fancy Pink Diamond price growth, 2010–2019
Fancy Color Research Foundation
+77%
Overall Fancy Colour Diamond Index growth, 2010–2019
Fancy Color Research Foundation
~498%
Estimated appreciation of certified Argyle Pink Diamonds, 2005–2025
Rio Tinto and the Fancy Color Research Foundation
As with any collection, past performance is not a guarantee of future value, and we always recommend independent financial advice before building a collection.
The Case for Argyle Pink Diamonds
Argyle Pink Diamonds represent one of the world’s rarest tangible assets. For over three decades, the Argyle Mine in Western Australia produced more than 90% of the world’s pink diamonds. Pink diamonds accounted for less than 0.1% of the mine’s total production. Following the permanent closure of the mine in 2020, no significant new source of comparable pink diamonds has emerged, creating a permanently finite supply and growing demand from collectors globally.
Unlike many traditional assets, Argyle Pink Diamonds are physical, portable assets with a global market and a history of strong demand from collectors and luxury consumers. Their rarity is underpinned by geological uniqueness, with the distinctive colour found in only a tiny fraction of all diamonds ever discovered.
As demand continues to be driven by increasing global wealth and the scarcity of premium stones, high-quality Argyle Pink Diamonds have become an increasingly sought-after store of wealth and portfolio diversification asset.
The Argyle Diamond Tender
The Argyle Tender was the world’s most prestigious annual offering of rare diamonds and the highlight of the industry calendar. Each year, fewer than 70 of the finest diamonds mined at Argyle were made available exclusively through a confidential invitation-only tender. Tender Diamonds can sell for upwards of $2 million per carat.
The entire first tender in 1984 was secured by Laurence Graff, the billionaire founder of Graff Diamonds. These were set into an elaborate brooch which was subsequently purchased by The Sultan of Brunei for an undisclosed sum.
In 2022, Tiffany & Co purchased 35 Diamonds directly from Rio Tinto from the last year of production at Argyle.
Tiffany declined to announce the purchase price, although brand President and Chief Executive Anthony Ledru confirmed to the Times it was the jeweler’s largest purchase of 2022, cementing the status of Argyle Diamonds as a highly coveted, concentrated store of wealth.
With the closure of the Argyle Mine in 2020, these historic Tender diamonds have become permanently finite, cementing their status among the world’s most coveted collectible gemstones.
Why Choose Unique Asset Acquisitions
At Unique Asset Acquisitions, our objective is to make collecting tangible assets straightforward, transparent and rewarding. From your initial enquiry through to acquisition and ongoing support, our experienced team will guide you every step of the way.
We take the time to understand your individual objectives before recommending any acquisition, ensuring every acquisition aligns with your financial goals and collection strategy.
Malca-Amit is a global logistics company specialising in the secure transportation, handling and storage of high-value goods. Its services include secure shipping, customs clearance, vaulting and storage, and specialised logistics for industries such as jewellery, precious metals, fine art and luxury goods.
Malca-Amit operates from office space within the same secure building as our storage partner, The Balthorne Group. Client meetings are held within these offices to ensure absolute discretion and security when viewing diamonds held in storage.
Secure Storage
Unique Asset Acquisitions offers clients the option of storing their diamonds in a secure, independent safe deposit facility in Hatton Garden, London — the heart of the UK’s diamond industry.
Our preferred storage partner, The Balthorne Group, is one of the country’s longest-established and most respected vaulting facilities, providing clients with the highest levels of security, confidentiality and peace of mind. Clients are welcome to arrange appointments to inspect and take possession of their diamonds at any time.
The Buying Process
From your first enquiry through to ongoing ownership, our team guides you through every stage of building your diamond collection.
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Getting to Know You
Before recommending any acquisition, we take the time to understand your individual objectives. We will discuss:
- Your collecting objectives
- Collecting experience and risk profile
- Preferred collecting horizon
- Budget and portfolio allocation
- Storage and custody preferences
- Liquidity requirements
- Existing alternative asset holdings, if applicable
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Your Recommendation
Following our consultation, we will present a carefully selected range of opportunities that best suit your objectives. Before proceeding, you will receive:
- A personalised acquisition proposal
- Full details of the asset
- Independent certification and grading reports, where applicable
- Provenance documentation
- Purchase agreement and Terms & Conditions
- Invoice and settlement instructions
- AML/KYC requirements in accordance with UK regulations
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Completion & Ownership
Once payment has been received and compliance checks have been completed, you will receive:
- Certificate of Acquisition
- Certificate of Ownership
- Independent grading or authentication certificates
- High-resolution photographs of your asset
- Storage certificate, if held in secure storage
- Comprehensive collection documentation
- Luxury presentation folder containing all original paperwork
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Ongoing Client Support
Our relationship with clients extends well beyond the initial purchase. As a client, you will receive ongoing support throughout your ownership, including:
- Market updates and industry news
- Access to our specialists whenever required
- Guidance on adding to your collection or reviewing your portfolio
- Discussion of future exit opportunities
Private Client & Auction House Network
Unique Asset Acquisitions has extensive experience facilitating the sale of high-value diamonds through leading international auction houses, including Bonhams and Christie’s, with established contacts within Sotheby’s. Alongside our auction-house relationships, we maintain a network of private clients and industry contacts, providing access to a range of potential buyers and trusted channels for the sale of exceptional diamonds.
Start Your Collection Today
Speak to our team for a no-obligation conversation.
Frequently Asked Questions
Due to the extreme rarity of the diamonds we trade and global demand, respected financial institutions including Forbes, Bloomberg and The Financial Times share our belief that Argyle diamonds are a safe haven and unaffected by economic slowdown. Since their discovery in the early 1980s, Argyle Pinks have never decreased in value, appreciating by a minimum of 20% p.a. (source: Forbes).
The minimum recommended spend for an Argyle Pink Diamond is around £10,000. This level ensures your diamond will display the necessary characteristics that will attract collectors in the future.
Unique Asset Acquisitions will cover the cost of vaulting your diamond for the first two years. After that, you’ll receive an annual invoice for £200 + VAT.
All diamonds offered by Unique Asset Acquisitions are certified by internationally recognised gemmological laboratories — GIA, IGI and HRD Antwerp. This guarantees the quality and provenance of each stone.
Our relationship with our clients is mutually beneficial. Unique Asset Acquisitions charges a 10% fee on any profit arising from the sale of your diamond(s).
Start Your Diamond Collection Today
Ready to explore Argyle Pink Diamond ownership? Speak to our team for a no-obligation conversation about building your collection.
Important Information
Not Financial Advice
The information on this page is provided for general interest only and does not constitute financial, tax or investment advice. Unique Asset Acquisitions is not authorised or regulated by the Financial Conduct Authority (FCA), and nothing here should be treated as a personal recommendation. We’d always encourage you to seek independent financial advice before adding diamonds to your collection.
Diamonds as a Tangible Asset
Argyle Pink Diamonds are a physical asset you own outright, not a regulated financial product. Ownership carries different considerations to traditional assets such as stocks, shares or property, and decisions should be based on your own research and judgement, alongside independent advice where appropriate.
No Guarantee of Financial Returns
The value of diamonds can go up as well as down, and depends on factors including market demand, rarity, certification and condition. Past performance of the diamond market is not a reliable indicator of future performance, and Unique Asset Acquisitions makes no guarantees regarding future value, profitability or resale.
Market Risks
Reselling a diamond depends on prevailing market conditions, and there’s no guarantee of the speed or price at which a sale can be achieved. Tax treatment depends on individual circumstances, current HMRC rules, and may change over time — always seek independent, personalised advice.