Ceylon Natural Blue Sapphire

Overview

• Type: Precious gemstone
• Chemical Composition: Aluminum oxide (Al₂O₃) with iron and titanium impurities, which give it its blue color.
• Color: Ranges from light to deep blue; the most desirable shade is a vibrant, royal blue.

Characteristics

• Hardness: 9 on the Mohs scale, making it one of the hardest gemstones, second only to diamond.
• Clarity: While clarity is important, some inclusions (like rutile) can enhance a sapphire’s character and value.
• Cut: Common cuts include oval, cushion, round, and pear, which maximize brilliance.

Sources

• Major Locations: Notable sources include Kashmir (historically significant), Sri Lanka, Myanmar, Madagascar, and Australia.
• Origin Impact: The origin can greatly influence value; Kashmir sapphires are particularly prized.

Value Factors

• Color: The depth and saturation of blue are crucial; vivid, saturated colors command higher prices.
• Clarity: Stones with fewer inclusions are more valuable; however, some inclusions can add unique character.
• Carat Weight: Larger sapphires are rare and more valuable.

Treatments

• Heat Treatment: Commonly used to enhance color and clarity; most sapphires on the market have been treated.
• Diffusion Treatment: Some stones may undergo surface diffusion to enhance color, which can affect value.

Cultural Significance

• Symbolism: Associated with wisdom, loyalty, and nobility. Historically, blue sapphires were believed to protect against envy and harm.
• Uses in Jewelry: Popular in engagement rings, necklaces, earrings, and bracelets, often set in gold or platinum.

Care and Maintenance

• Cleaning: Clean with warm, soapy water and a soft cloth; avoid harsh chemicals and ultrasonic cleaners.
• Storage: Store separately to prevent scratches from harder materials.