Why Argyle Pink Diamonds Are So Extraordinarily Rare
Pink diamonds are one of nature's most perplexing creations. Unlike most coloured diamonds — where trace elements such as nitrogen (yellow) or boron (blue) are responsible for colour — pink diamonds owe their extraordinary hue to a rare structural phenomenon within the crystal itself. A process called plastic deformation, caused by intense pressure during the stone's journey from the earth's mantle to the surface, distorts the crystal lattice and causes it to absorb certain wavelengths of light, producing the range of blush to vivid pink shades that have captivated collectors and designers for generations.
The Argyle mine in the remote East Kimberley region of Western Australia was the world's most significant source of pink diamonds, responsible for more than 90% of global supply at its peak. The mine operated from 1983 until its permanent closure in November 2020 — an event that marked not just the end of production, but the beginning of an era in which existing Argyle pink diamonds are truly finite.
Even at peak production, Argyle pinks were extraordinary rarities. Of the millions of carats of diamonds Argyle produced each year, less than 0.1% were of gem-quality pink. The annual Argyle Pink Diamond Tender — an invitation-only auction of the finest stones — typically featured fewer than 60 lots. For collectors, designers, and clients working with Sara across the NSW South Coast, owning an Argyle pink diamond is an inherently Australian story of geological wonder.
Interested in acquiring or designing with an Argyle pink diamond? Sara has access to certified stones and can guide you through every step.
Book a Consultation
A certified parcel of Argyle pink diamonds — each stone accompanied by its original Argyle Certificate of Authenticity, the definitive provenance document for these Australian treasures.
Reading an Argyle Pink Diamond Grade
The GIA grades pink diamonds using the standard Fancy Colour Diamond grading system: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep, and Fancy Dark. However, the Argyle mine developed its own proprietary grading scale — using numeric codes from 1 to 9 paired with colour descriptors (PP for Purplish Pink, P for Pink, PR for Pink Rosé, PC for Pink Champagne) — that remains an important reference in the market.
The most prized Argyle grades sit at the intense and vivid end of the spectrum: a 1PP (the deepest purplish pink) commands extraordinary premiums and appears in major auction houses globally. Even lighter grades — a delicate 6P or a warm 7PR — hold significant value precisely because the supply chain is now permanently closed.
Any genuine Argyle pink diamond of consequence will be accompanied by an Argyle Certificate of Authenticity, issued by the mine itself and featuring the stone's unique laser inscription number. Sara can verify and explain these certificates during a consultation, ensuring that any stone you consider is fully documented and authentic.
Left: A bespoke pink diamond piece crafted in Sara's Kiama studio. Right: The Argyle and GIA grading systems for pink diamond colour.
Designing a Pink Diamond Piece in Kiama
Pink diamonds demand design settings that honour their colour rather than compete with it. The most popular choice remains rose gold — its warm hue enhances the pink tones of the diamond while creating a cohesive palette from stone to metal. White gold and platinum are also used, particularly for stones with cooler purplish-pink modifiers, where the contrast with a bright metal allows the colour to read as more vivid.
For custom engagement rings, pink diamonds are often set as centre stones in halo designs — where a frame of white diamonds dramatically intensifies the perceived saturation of the pink — or as trilogy centrepieces flanked by colourless or blush-toned side stones. Sara Handmade Jewellery has created pink diamond rings, pendants, earrings, bangles, and eternity bands, each piece tailored to the specific stone and the client's vision.
Pink diamonds also make extraordinary choices for jewellery remodelling — many clients come to Sara with inherited Argyle stones that were set in dated designs, looking to honour the stone's value in a contemporary piece they will actually wear. Sara's process begins with understanding the stone, then understanding the person, before a single sketch is drawn.
A delicate eternity band set with three Argyle pink diamonds — a Sara Handmade Jewellery design celebrating both the rarity of the stones and the intimacy of the commission.
Understanding Pink Diamond Value Post-Argyle
Argyle pink diamonds have consistently outperformed many traditional investment assets over the long term, with strong price appreciation driven by both their extreme rarity and their identity as distinctively Australian stones. The mine's 2020 closure was widely predicted to accelerate price growth — and the data since then has largely borne this out, with certified Argyle pinks achieving record prices at international auction.
A pink diamond of even modest size — 0.10 to 0.30 carats — can command anywhere from three to twenty times the price of a comparable colourless diamond of equal carat weight, depending on colour grade and documentation. Larger stones of Fancy Intense or Fancy Vivid grade are now extraordinarily valuable, with stones over one carat in top grades routinely selling at auction for millions of dollars.
If investment potential is part of your consideration, Sara recommends seeking independent advice from a specialist diamond investment adviser alongside gemmological consultation. Her role is to ensure you have the highest quality stone, fully certified, with complete provenance documentation — and to design jewellery around it that allows you to wear and enjoy your investment rather than simply store it.
