The History of Diamond Mining in Australia

Diamonds have been a timeless magic for centuries. But Australia's involvement in diamond mining is not only fascinating, it's influenced global geology, science, and the world of jewelry in more ways than many could have ever dreamed. This guide explains The History of Diamond Mining in Australia, from early prospecting to modern-day sustainability, with all the reasons why these stones are so crucial to jewelry collectors and fans!

1. Early Alluvial Discoveries (1850s–1920s)

Australia’s diamond saga began in the mid-19th century. In 1851, explorers discovered some diamonds around the region of Bathurst, NSW, one of the earliest in the country. In the Copeton and Bingara region, which is part of the New England Tableland, mining between the late 1860s and the early 1920s produced a number of alluvial diamonds, especially in the Monte Christo and Star of the South mines. These diamonds were generally small and uneven, but they would generate initial Australian interest in the diamond industry.

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2. Ellendale: The Geologic Game-Changer (1976 Onwards)

The first breakthrough was during the discovery of the Ellendale diamond field in 1976 in the Kimberley region of Western Australia. It was the first large hard-rock (lamproite) diamond field found anywhere on earth, and broke nearly all the scientific thinking of the day, which held that diamonds would only be found as part of kimberlite pipes. More than 40 lamproite pipes were evaluated for diamond content, a turning point in geological exploration, and broadening the worldwide search for gems.

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3. Argyle: A Giant Among Mines (1979–2020)

The discovery of the Argyle diamond pipe in 1979 by ground-breaking geologist Maureen Muggeridge solidified the diamond identity of Australia. Argyle was revolutionary; it was the initial large-scale diamond mine to yield gems out of lamproite, rather than kimberlite, and was the most global-scale gem producer.

In 1994, Argyle was already mining more than 42 million carats of diamonds every year, producing as much as 40% of the world's diamond production. Perhaps even more astounding was its domination of colored diamonds; Argyle supplied more than 90% of the world's production of pink diamonds, and produced yellow, blue, brown, and precious red gems as well.

Methods of operation changed over the years: open-pit mining started in the 1980s, developed into sophisticated block-cave underground mining by 2013, a first for Western Australia. But in 2020, having produced some 865 million carats, Argyle actually ceased operating, closing the book on a titanic epoch in diamond history.

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4. Merlin: Australia's Biggest Gem Discovery (2000–2003)

Parallel to Argyle, the Northern Territory's Merlin diamond mine briefly ran between 2000 and 2003, yielding some 500,000 carats of predominantly gem-quality diamonds, 65% gem-grade, much better than Argyle's average. To note, Australia's largest diamond, an unbelievably 104.73-carat Type IIa gem, was found here. The future of the mine was recently cast into doubt as mining firm Lucapa went into administration, threatening proposals for revival.

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5. Legacy & Modern Reflections

The history of diamond mining in Australia, from the initial alluvial prospects to the geological revolution of lamproite fields, has left a remarkable impression on the world of gemology. The legacies of Argyle and Merlin continue to be remembered in the unusual, irreplaceable types of diamonds they produced, and also in the legacy of applied mining science. The colored stones produced by Argyle are so extraordinary in nature that they have remained a keen interest to collectors of gems worldwide, and their discarded stones, especially fancy reds, have found homes at auctions as among the rarest gem treasures of the planet.

Although active mining has ceased, Australia has a diamond legacy that forces the flow of responsible sourcing, ethical jewelry crafting, and scientific research.

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Final Thoughts

SKYGEM commemorates this rich heritage. From tales of pink Argyle diamonds to the superior quality of Merlin discoveries, our curations celebrate The History of Diamond Mining in Australia. Browse our collections to find jewelry that echoes this shining past!