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1 Dollar - Elizabeth II 4th Portrait - Treasures of Australia - Diamonds
| Issuer | Royal Australian Mint |
|---|---|
| Year | 2009 |
| Type | Non-circulating coin |
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| Reverse description | The reverse presents an abstract stylised depiction of the Australian landscape, featuring a sweeping mountain silhouette rendered in polished relief against a deep blue enamelled sky occupying the upper field. The lower portion of the field is bisected by a semi-circular transparent locket cavity containing loose rough diamond specimens, evoking Australia's Argyle diamond mining heritage. The inscriptions TREASURES OF AUSTRALIA arc along the lower border in raised Latin lettering, with the designer's initials JG present in the field. |
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| Mintage | 2009 - Proof - 7,500 |
| Additional information |
The "Treasures of Australia" series, launched by the Royal Australian Mint in the mid-2000s, was designed around the country's four principal natural resources — gold, diamonds, sapphires, and opals. The diamond issue draws directly on the Argyle mine in Western Australia's Kimberley region, which by 2009 was producing over 90% of the world's pink diamonds and roughly a third of all natural diamonds globally by volume.
Argyle's output was extraordinary in quantity but complicated in quality — most stones were industrial grade. The mine closed permanently in 2020, a decision that has since driven pink diamond prices to record levels.