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The Intriguing World of Ruby Stones

The Intriguing World of Ruby Stones


When it comes to gemstones, few can match the mystique and allure of rubies. Known as the "King of Gemstones," rubies have captured the hearts of gem enthusiasts and collectors for centuries. In this comprehensive guide, we will delve into the captivating world of ruby stones, exploring their history, characteristics, uses, and much more.exploring their history, characteristics, uses, and much more.

What are Rubies?

Origin and Formation

Rubies are a type of corundum mineral, with their striking red color being the result of trace amounts of chromium in the crystal structure. These precious gems are formed deep within the Earth's crust under high pressure and temperature conditions, typically in marble or basalt rocks. The process takes millions of years and involves the slow growth of corundum crystals.

Characteristics of Rubies

Rubies are prized for their vibrant red color, ranging from deep crimson to pinkish-red. Their beauty is enhanced by their excellent hardness, scoring 9 on the Mohs scale, second only to diamonds. This durability makes rubies suitable for various applications, including jewelry and industry.

Historical Significance

Legends and Myths

Rubies have a rich history steeped in legend and folklore. In many cultures, they are associated with passion, love, and protection. In Hindu mythology, rubies were considered the "king of precious stones." Ancient Burmese warriors believed that wearing rubies in battle made them invincible.

Famous Ruby Jewelry

Throughout history, rubies have adorned the crowns, rings, and necklaces of royalty and the wealthy. The British Imperial State Crown, for example, features the Black Prince's Ruby, which is, in fact, a large spinel. The world-renowned "Ruby Slippers" from "The Wizard of Oz" are another iconic example of ruby-studded footwear.

Ruby Mining Locations

Rubies can be found in various parts of the world, with some of the most famous mining locations including Myanmar (formerly Burma), Thailand, Sri Lanka, and Madagascar. Each region produces rubies with unique characteristics and qualities, adding to the gemstone's allure.

Ruby Varieties and Grading

Pigeon's Blood Ruby

The most coveted variety of ruby stone is known as "Pigeon's Blood." These rubies exhibit a deep, pure red color with a hint of blue, resembling the color of fresh pigeon's blood. Their rarity and exceptional color make them highly valuable.

Star Ruby

Star rubies are unique due to their asterism effect, which creates a star-shaped pattern when viewed under a direct light source. This phenomenon is caused by needle-like inclusions of rutile within the ruby. Star rubies are popular in jewelry, especially in cabochon cuts to enhance the star effect.

Commercial Grading

Rubies are graded based on the "Four Cs" - color, clarity, cut, and carat weight, similar to diamonds. The Gemological Institute of America (GIA) and other institutions provide standardized grading systems to assess the quality of rubies.

Uses of Rubies

In Jewelry

Rubies have been a symbol of love and passion for centuries, making them a popular choice for engagement rings and other jewelry pieces. Their durability and brilliance ensure they can withstand the rigors of daily wear.

Industrial Applications

Beyond their use in jewelry, rubies have practical applications in various industries. They are used in laser technology, as bearings in watch movements, and as a component in cutting tools due to their hardness.

Caring for Rubies

To maintain the beauty of your ruby jewelry, it's essential to take proper care. Clean them gently with mild soap and warm water, and avoid exposure to harsh chemicals or extreme temperatures. Periodic professional cleaning and inspection are recommended.

Ruby vs. Other Gemstones

Rubies are often compared to other red gemstones like red spinel and garnet. While they share a similar color, rubies stand out due to their exceptional hardness and rarity, making them more valuable.

FAQs About Rubies

Q1: What gives rubies their red color?

A: Rubies get their red color from trace amounts of chromium in their crystal structure.

Q2: Are rubies rarer than diamonds?

A: Yes, natural rubies are rarer than diamonds, especially high-quality rubies.

Q3: Can rubies be treated to enhance their color?

A: Yes, many rubies undergo heat treatment to improve their color and clarity. This is a common practice in the gemstone industry.

Q4: How do I know if a ruby is genuine?

A: Consult a reputable gemologist or use specialized equipment to authenticate a ruby's genuineness.

Q5: Are there synthetic rubies?

A: Yes, synthetic rubies, also known as lab-grown or synthetic corundum, are created in a laboratory but share the same chemical composition as natural rubies.

Q6: What is the largest ruby ever found?

A: The largest ruby on record is the "Red Cross" Ruby, weighing an astonishing 100,000 carats (44 pounds).


Rubies continue to enchant and inspire people worldwide with their breathtaking beauty and rich history. Whether you're a collector, a jewelry enthusiast, or simply intrigued by the world of gemstones, rubies are sure to captivate your imagination. Their deep red hue, combined with their enduring durability, ensures that the fascination with rubies will endure for generations to come.

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