Leslie Massey
Rubies, revered across the world for centuries, can be found in Australia, with deposits primarily located in the rugged terrains of New South Wales and Queensland. The New England area of New South Wales and the Central Queensland gemfields, including Anakie and Rubyvale, are known sources of rubies, often recovered from alluvial deposits. These rubies are characterised by their unique colour and clarity, though they may not exhibit the vivid red hues of other notable deposits. The genesis of these rubies can be traced to the continent's tectonic and metamorphic history, providing the necessary conditions of high pressure and temperature for their formation.
| Characteristics | Values |
|---|---|
| Countries where rubies have been mined | Thailand, Cambodia’s Pailin and Samlout Districts, Burma, India, Afghanistan, Australia, Namibia, Colombia, Japan, Scotland, Brazil, Pakistan |
| Australian regions where rubies have been found | New England area of New South Wales, Central Queensland gemfields |
| Localities within the Central Queensland gemfields | Anakie, Rubyvale |
| Geological associations | Metamorphic rocks, alluvial deposits, volcanic pipes, basaltic soils |
| Ruby colour | Ranges from red to pink |
| Ruby value | The value of every carat can range from $1,000 AUD up to $20,000 AUD per carat |
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What You'll Learn
Ruby deposits in New South Wales
Australia is known for its mineral wealth, including rubies. While not as prominent as sources from countries like Myanmar or Sri Lanka, Australia does indeed have ruby deposits, primarily located in the rugged terrains of New South Wales and Queensland.
In New South Wales, rubies are mined in the New England region, around Inverell and Glen Innes, and northwest of Goulburn, near Oberon. The New England area, particularly around Glen Innes, is known for its mineral-rich grounds and historical mining activities. Rubies found in this region are often recovered from alluvial deposits alongside sapphires. The Kings Plains area, near Inverell, has some of the richest deposits of gem-quality sapphires ever mined.
The genesis of ruby deposits in New South Wales can be traced to the Proterozoic era, with geological processes leading to the formation of ruby-bearing rocks. The rubies are geologically associated with metamorphic rocks and alluvial deposits, linked to the tectonic and metamorphic history of the Australian continent, which provides the necessary conditions for ruby formation, namely high pressure and temperature.
Commercial mining of rubies in New South Wales occurs in the New England area, where open-pit mining is used to extract the corundum ore from gravels. Mining operations are typically small, and tools used might include jackhammers, excavators, or shovels.
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Central Queensland gemfields
The Central Queensland Gemfields, located in the Central Highlands region, is a great place to find rubies in Australia. Covering an area of just under 1,200 square kilometres, the Gemfields are located roughly 900 kilometres northwest of Brisbane and 270 kilometres west of Rockhampton. The region includes localities such as Anakie, Sapphire, Emerald, and Rubyvale, which are known for their rich gemstone deposits.
The Gemfields are renowned for their volcanic pipes and basaltic soils, which indicate past volcanic activity that has contributed to the formation and transport of gem-quality rubies. The rubies found in this region are characterised by their distinctive colour and clarity, though they may not exhibit the vivid red hues typically associated with rubies. The exploration and extraction of these rubies are subject to strict environmental and regulatory scrutiny.
To search for rubies in the Central Queensland Gemfields, you will need a fossicking licence. There are five designated fossicking areas and six designated fossicking lands in the region set aside for recreational and tourist fossicking. In addition to rubies, these areas contain world-class sapphires and zircon. Fossicking is not permitted on mining leases or claims without the permission of the holders.
The Gemfields have a long history in the mining industry, with a boom in large-scale, mechanised mining in the 1970s that made Australia responsible for about 80% of world sapphire production. Today, the region relies heavily on tourism, offering a range of attractions and insights into Australia's mining history. Visitors can purchase precious stones from local businesses and learn about the unique geological conditions that have formed these precious gemstones.
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Rubyvale and Anakie localities
The Central Queensland gemfields, including the localities of Anakie and Rubyvale, are well-known sources of corundum gemstones, such as rubies. The volcanic history of this region has contributed to the formation and availability of gem-quality rubies. While the rubies from this area may not always exhibit the vivid red hues found in other deposits, they are characterised by their distinct colour and clarity.
Rubyvale, located in the heart of the gemfields region, is a hub for gem-seekers and sapphire hunters. The town has a population of around 600 people, but sees many visitors passing through in search of precious stones. Rubyvale offers five dedicated fossicking areas: Reward, Middle Ridge, Scrub Head, Divide, and Tomahawk Creek. For those seeking a more relaxed experience, fossicking parks provide instructions and equipment, allowing visitors to purchase a bag of wash and learn how to sieve, rinse, and sort sapphires from gravel. Additionally, the town hosts weekly Sunday markets during the winter and is home to the iconic New Royal Hotel, known for its quirky construction using 'billy boulders' and ironbark logs.
Anakie, another tiny township near Rubyvale, also attracts gem enthusiasts. Anakie hosts the Gemfest Festival, a four-day event that draws visitors to the region. The town also offers caravan parks and camping opportunities for visitors.
The exploration and extraction of rubies in these localities are subject to strict environmental and regulatory scrutiny. While ruby deposits exist in Australia, they have not been fully exploited, as the focus has often been on more profitable and abundant resources, such as sapphires and opals.
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Alluvial deposits and metamorphic rocks
Rubies in Australia are geologically associated with metamorphic rocks and alluvial deposits. The genesis of these rubies is linked to the tectonic and metamorphic history of the Australian continent, which provides the necessary conditions for ruby formation, namely high pressure and temperature.
The New England area of New South Wales, particularly around Glen Innes, is known for its mineral-rich grounds and historical mining activities. Rubies are often recovered from alluvial deposits in this region, alongside sapphires. The Central Queensland gemfields, including localities such as Anakie and Rubyvale, are also well-known sources of rubies and other corundum gemstones. The volcanic pipes and basaltic soils in this region indicate past volcanic activity that contributed to the formation and transport of gem-quality rubies.
The occurrence of rubies in these regions is a result of the unique geological conditions that Australia offers. The high pressure and temperature associated with the tectonic and metamorphic history of the continent provide the necessary environment for ruby formation within the metamorphic rocks and alluvial deposits.
Prospectors seeking rubies in Australia should focus their efforts on these specific regions, namely the New England area of New South Wales and the Central Queensland gemfields. The mining history and mineral-rich grounds of these areas indicate a higher potential for ruby discovery. Additionally, the distinctive geological characteristics, such as volcanic pipes and basaltic soils, provide favourable conditions for ruby formation.
It is important to note that the exploration and extraction of rubies in Australia are subject to rigorous environmental and regulatory scrutiny. The economic viability and gemstone quality are critical factors that influence the commercial development of these resources. The history of ruby mining in Australia has been characterised by opportunistic exploitation rather than systematic development, with small-scale operations employing basic methods of extraction.
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Ruby formation conditions
Rubies are a variety of the mineral species corundum, which is associated with metamorphic rocks and alluvial deposits. The genesis of rubies in Australia is linked to the continent's tectonic and metamorphic history, which provides the necessary conditions for ruby formation. These conditions include high temperatures and pressure.
In Australia, rubies are predominantly found in the rugged terrains of New South Wales and Queensland. More specifically, the New England area of New South Wales and the Central Queensland gemfields are known locations. The Central Queensland gemfields include localities such as Anakie and Rubyvale. Rubies are often found alongside sapphires in alluvial deposits in the New England area, particularly around Glen Innes, which is known for its mineral-rich grounds.
The volcanic pipes and basaltic soils of the Central Queensland gemfields indicate past volcanic activity that has contributed to the formation and transport of rubies. The rubies from this region are known for their distinctive colour and clarity, though they may not always attain the vivid red hues seen in other notable deposits worldwide.
The exploration and extraction of rubies in Australia have been relatively modest compared to other countries, with the country's ruby deposits overshadowed by more profitable and abundant resources such as sapphires and opals. The mining of rubies in Australia has been characterised by small-scale operations using basic extraction methods, reflecting the broader historical context of Australian gem mining dominated by artisanal miners.
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Frequently asked questions
Rubies can be found in the New England area of New South Wales and the Central Queensland gemfields, including localities such as Anakie and Rubyvale.
The exploration and extraction of rubies in Australia are subject to rigorous environmental and regulatory scrutiny. It's also important to be cautious when purchasing rubies due to the large number of circulating counterfeit gemstones. Make sure to buy from a reputable dealer and get lab certification to verify the quality.
Australian rubies are often characterized by their distinctive colour and clarity, though they may not always reach the vivid red hues found in other notable deposits. They are geologically associated with metamorphic rocks and alluvial deposits, reflecting the area's prolific geological conditions for the development of corundum, the mineral species to which rubies belong.
