Below is a comprehensive summary of the available information regarding the ruby based on the provided sources.

The Ruby: A Comprehensive Guide to Values, Origins, and Properties

The ruby is a prestigious gemstone known for its exclusively red color, which can reach extraordinary levels of saturation. Recognized as the official birthstone for July, premium-quality rubies are among the most expensive gemstones in the world, with record prices for exceptional specimens exceeding $1,000,000 per carat. Due to their rarity, large gem-quality rubies are often more valuable than diamonds of a comparable size.

Gemological Properties and Market Value

Rubies are a variety of corundum. Their value is determined by a combination of carat weight, color intensity, and clarity. Market prices fluctuate dramatically, ranging from a few hundred dollars to several thousand dollars per carat.

Value Drivers

Several factors influence the market price of a ruby: - Color: The most desirable color is the vivid "pigeon blood red," particularly in stones from Burma. - Treatment: Rubies are among the most frequently treated gemstones. Approximately 90% of rubies on the market are treated to enhance color or clarity. Untreated (natural) rubies are rare and command significantly higher prices. - Cut: Most rubies are "native cut" in their country of origin. While these are common, stones that are custom-cut or recut to professional proportions typically command higher per-carat values. - Rarity: Gem-quality rubies are rarer than blue sapphires of a similar size (1-3 carats), which drives up the value of even modest-sized rubies.

Price Comparisons

Based on available market data: - General range: Original ruby stones can range from INR 2,000 to 50,000 per carat. - Treatment impact: An average quality treated ruby may cost between INR 7,000 and 20,000 per carat, whereas a natural ruby of the same quality may range from INR 10,000 to 30,000 per carat. - High-end examples: A 1.52-carat ruby may start at $5,500 per carat depending on clarity. Specific high-value examples include a 3.83 ct oval faceted Burmese ruby with a retail price of €74,000.

Origins and Sourcing

Rubies are sourced from several key global locations, each contributing different qualities to the market: - Burma (Myanmar): Highly prized for producing the vivid pigeon blood red color. - Mozambique: A significant source of intense red rubies, often available in various shapes like octagons. - Sri Lanka and Madagascar: Both are recognized as capable of producing ultra-fine quality gemstones.

Astrological and Metaphysical Beliefs

In certain traditions, rubies are associated with the heart chakra and are believed to make the wearer more passionate and emotionally expressive.

Usage and Effects

• Benefits: It is believed that a top-quality ruby can show results within 2-3 days of wearing.
• Precautions: Astrologically, it is advised not to wear a ruby in combination with a diamond.
• Side Effects: If the stone is not astrologically suitable for the wearer or is worn incorrectly, it is claimed it may lead to insufficient sleep or increased aggression.

Synthetic Rubies

The synthesis of corundum gemstones, including rubies, began in the late 19th century. In 1904, French chemist Auguste Verneuil introduced the flame fusion process, commonly known as the Verneuil process, to create synthetic versions of the stone.

Buyer's Guidance

Due to the prevalence of imitations and treatments in the gemstone market, verification is essential. Buyers are encouraged to: - Verify the origin and quality through reputable certification labs such as IGI, GSI, IIGJ, or IGITL. - Purchase from established sellers with a history of expertise in loose gemstones. - Be aware that while treatments enhance a stone, some gems may revert to their original state over time, making untreated stones a more stable investment.

Summary of Gemstone Data

Sources

1. Navratan
2. The Natural Ruby Company
3. Carat-Online
4. Rashi Ratan Bhagya
5. Gem Society
6. 77 Diamonds