Teaghan Hall

After all, the Argyle Diamond Mine was famously the world’s most consistent source of fancy pink, blue, violet, and brown fancy colour diamonds; all of which were subject to very successful marketing campaigns. With the closure of the mine in 2020 and the final tender wrapping up in the fourth quarter of 2025, the famous Argyle Mine has been relegated to history. Argyle’s power seems to have cast a shadow over other mining ventures, which have become stagnant despite promising prospects.

Australia’s ancient landscape hosts rock formations dating back billions of years, making it an important location for geological research. Australia is home to hundreds of varieties of gemstones; however, a few gemstones have become a unique part of the country's history. Australia has long been renowned as one of the top sources of opal in the world.

The ancient landscape comprises various cratons, formed during the Precambrian period, the earliest part of the Earth's history. This unique geological landscape is rich in minerals, providing a diverse environment for gemstone formation. Brazil is home to more than a hundred different varieties of gemstones; here are just a few that have shaped the gemmological history of the country.