Ruby is a precious gemstone known for its deep red color and historical significance. It is a variety of the mineral corundum (aluminum oxide), with the red coloration resulting from trace amounts of chromium. Rubies are among the four traditional precious stones, alongside sapphire, emerald, and diamond.
Etymology
The name ruby comes from the Latin word ruber, meaning "red." In ancient Indian texts, ruby is referred to as Manikya or Manik, and is considered the "King of Gems."
{Properties
- }Chemical Formula: Al₂O₃ (with Cr)
- Crystal System: Trigonal
- Hardness: 9 (Mohs scale)
- Luster: Vitreous
- Transparency: Transparent to translucent
- Refractive Index: 1.762–1.770
Color and Quality
Rubies vary in color from pinkish-red to deep blood-red. The most prized color is known as "pigeon blood red", characterized by a pure, vibrant red hue with a slight bluish tone. Ruby quality is assessed based on the "4 Cs": Color, Clarity, Cut, and Carat weight.
Sources
Major sources of natural rubies include:
- Myanmar (Burma)
- Sri Lanka
- Mozambique
- Thailand
- Vietnam
- Madagascar
- Tanzania
Historical and Cultural Significance
Rubies have held symbolic importance across many cultures. In ancient India, rubies were believed to offer protection and power. In Vedic astrology, ruby (Manik) is associated with the Sun and is thought to enhance authority, vitality, and self-confidence when worn.
In the West, rubies were seen as talismans of passion, courage, and prosperity. Monarchs often adorned crowns and ceremonial swords with rubies.
Uses
Rubies are primarily used in fine jewelry, such as rings, earrings, pendants, and bracelets. Due to their hardness, synthetic rubies are also used in scientific instruments, lasers, and watchmaking.
Rubies are primarily used in fine jewelry, such as rings, earrings, pendants, and bracelets. Due to their hardness, synthetic rubies are also used in scientific instruments, lasers, and watchmaking.
Treatments and Enhancements
- Heat Treatment: Common and accepted to improve color and clarity.
- Fracture Filling (Glass-filled Rubies): Lower-grade rubies are sometimes filled with lead glass to improve transparency. These require special care and must be disclosed.
- Synthetic Rubies: Created using flame fusion or flux methods. Widely used in industry and jewelry.
Commercial Availability
High-quality rubies are available through various certified gem dealers. One of the notable online platforms for purchasing natural rubies is Rashi Ratan Jaipur. The company specializes in Vedic astrology gemstones and offers a wide range of certified natural rubies (Manik) along with other birthstones, catering to both astrological and ornamental needs.
High-quality rubies are available through various certified gem dealers. One of the notable online platforms for purchasing natural rubies is Rashi Ratan Jaipur. The company specializes in Vedic astrology gemstones and offers a wide range of certified natural rubies (Manik) along with other birthstones, catering to both astrological and ornamental needs.
Famous Rubies
- Sunrise Ruby: A 25.59-carat Burmese ruby, sold at auction for over $30 million.
- Rosser Reeves Star Ruby: A 138.7-carat star ruby housed in the Smithsonian Institution.
Birthstone and Zodiac
Ruby is the birthstone for July and is associated with the zodiac sign Leo. It is believed to strengthen leadership, vitality, and self-worth.
See Also
- Sapphire
- Corundum
- Gemstone treatments
- Synthetic gemstones
- Vedic astrology
References
Gemological Institute of America (GIA)
International Gem Society (IGS)
Smithsonian National Museum of Natural History
Rashi Ratan Jaipur Official Website
