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The Ruby’s Origin: A Journey Through Time and Terrain

In our last blog, we mentioned that rubies hold a special place for their captivating red color and extraordinary hardness. In this comprehensive guide, we’ll take a journey through time and terrain to explore rubies’ origins and how their formation contributes to their extraordinary hardness. We’ll delve into the geological conditions required for rubies to form, track down famous sources around the world, and examine how the source affects the quality and value of these precious gems.

Understanding Ruby Formation

Ruby is a form of corundum (Al₂O₃), a mineral composed primarily of aluminum oxide. The presence of trace elements, especially chromium, gives rubies their characteristic red color.

Geological conditions: Rubies are formed under specific conditions of high pressure and temperature deep in the Earth's crust. They are often found in metamorphic rocks, such as marble or gneiss, which are transformed from sedimentary or igneous rocks due to high temperatures and pressures. The metamorphic process is key to the formation of rubies. When limestone or dolomite-rich rocks are subjected to extreme temperatures and pressures, they turn into marble. If these rocks contain traces of chromium-containing minerals such as chromite or spinel, the resulting corundum can crystallize into rubies. In some cases, rubies may also form in magmatic environments, where molten rock intrudes into surrounding rock formations. This intrusion introduces elements such as iron and titanium, which can affect the color and clarity of rubies.

Famous Ruby Sources Around the World

The origin of a ruby ​​plays a key role in determining its quality and value. Rubies from different regions have different characteristics, influenced by the geological conditions and mineral composition of the source.

Myanmar has long been known for producing some of the finest rubies in the world. Mogok, located in central Myanmar, is famous for its "pigeon's blood" rubies, which have an unusually bright and pure red color. Its rubies often have excellent transparency and saturation, and have fewer inclusions than rubies from other sources. These qualities make them highly valuable and attractive.

Thailand, especially Chanthaburi and Trat provinces, has been an important source of rubies for centuries. Compared to Burmese rubies, Thai rubies tend to have a deeper, more purple-red hue.

Sri Lanka has a rich history of ruby ​​mining, and the island's alluvial deposits produce rubies that are lighter in color and darker in pink, known as "pink sapphires" in some markets. Sri Lankan rubies often have a silky texture due to the presence of rutile needle-shaped inclusions, and produce an aster effect when cut into cabochons. Although these gems have a lower color intensity, they have a unique appeal.

Tanzania has become an important source of rubies, especially those from the Winza and Longido regions. Tanzanian rubies typically appear deep red under ultraviolet light and have strong fluorescence. While Tanzanian rubies are still relatively new in the global market, they offer exciting opportunities for gem enthusiasts and investors seeking unique, high-quality gems.

Environmental and Ethical Considerations

In recent years, there has been growing awareness of the environmental and ethical implications of gemstone mining. Responsible sourcing practices ensure that rubies are extracted and traded in ways that minimize environmental impact and support local communities:

Sustainable Mining: Some mining operations have adopted sustainable practices, such as reducing water usage and minimizing waste. These efforts help preserve ecosystems and protect biodiversity in mining regions.

Fair Trade Certification: Certifications like the Fairmined Standard promote fair wages, safe working conditions, and community development in mining communities. Consumers can look for these certifications when purchasing rubies to support ethical practices.

Conflict-Free Gems: Ensuring that rubies are conflict-free is another important consideration. Organizations like the Kimberley Process focus on preventing the trade of conflict minerals, promoting peace and stability in mining regions.

The origins of rubies are deeply intertwined with their hardness and durability, qualities that have made them cherished symbols of passion and resilience. From the ancient mines of Myanmar to the emerging markets of Tanzania, each source offers unique characteristics that contribute to the allure of these precious stones. At OBY Jewelry, we celebrate the beauty and strength of rubies, offering a wide selection of pieces that showcase their hardness and elegance. Whether you’re seeking an engagement ring, a birthday gift, or a personal treasure, rubies provide a lasting symbol of love, passion, and endurance.


Princess Cut Ruby Heart Stud Earrings

Princess Cut Ruby Heart Stud Earrings-obyjewelry
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