Exploring the Fascinating World of Rubies
Updated: 18 hours ago
Rubies, known for their captivating red color and historical significance, are among the most valued gemstones in the world. This guide delves into the properties, formation, and uses of rubies, providing insights into what makes them so special and sought after.
Properties of Rubies
Color and Clarity:
Color: Rubies are the red variety of the mineral corundum. The red color comes from trace amounts of chromium. The most prized rubies are a deep, vibrant red, often referred to as "pigeon blood" rubies for their rich hue (Gemporia | Live your legacy) (Gem Rock Auctions).
Clarity: Inclusions, often called "silk," are common in rubies and can enhance their value by proving their natural origin. High-quality rubies are transparent with minimal inclusions, while lesser grades might be more opaque (Gemporia | Live your legacy) (Minerals).
Physical Properties:
Hardness: With a Mohs hardness of 9, rubies are incredibly durable, second only to diamonds. This makes them suitable for various types of jewelry (Gem Rock Auctions).
Luster: Rubies exhibit a vitreous luster, adding to their brilliance and appeal (Minerals).
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Formation and Sources
Rubies form under specific geological conditions, typically in marble or basalt rocks where chromium is present but silica and iron are absent. Major sources of high-quality rubies include:
Myanmar (Burma): Known for producing the finest rubies, including the highly prized "pigeon blood" rubies.
Thailand: Thai rubies are typically darker with a brownish-red hue due to higher iron content.
Mozambique: Since their discovery in 2008, Mozambique rubies have gained prominence for their quality and vibrant color.
Other Sources: Rubies are also mined in Sri Lanka, India, Afghanistan, and Madagascar (Gemporia | Live your legacy) (Gem Rock Auctions) (Jewelry Informer).
Historical and Cultural Significance
Rubies have been revered for centuries, symbolizing wealth, power, and protection. They were highly valued in ancient India, where they were classified into a caste system, and in ancient Rome, where they were praised by scholars like Pliny the Elder. Historically, rubies have been worn as talismans to protect against harm and ensure victory in battle (Gem Rock Auctions) (Minerals).
Uses of Rubies
Jewelry: Rubies are commonly used in all forms of jewelry, including rings, necklaces, earrings, and bracelets. The "star ruby," displaying asterism, is particularly valued when cut into cabochons.
Decorative Items: Larger ruby crystals and geodes are often used as decorative pieces.
Technological Uses: Rubies are used in laser technology due to their ability to produce a coherent light beam (Minerals).
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