Topaz

Topaz

Topaz is a captivating gemstone celebrated for its remarkable clarity, vibrant color spectrum, and exceptional hardness. Its name is believed to have originated from the ancient Greek island of Topazios, now known as Zabargad, though the stones found there were likely peridot.

Variety and Category

• Mineral Family: Nesosilicate
• Chemical Formula: Al₂SiO₄(F,OH)₂
• Crystal System: Orthorhombic
• Mohs Hardness: 8

Topaz’s impressive hardness makes it suitable for various types of jewelry, though care should be taken to avoid sharp blows due to its perfect cleavage.

Color and Value

Topaz exhibits a wide array of colors, including:

• Colorless
• Blue: Ranging from pale sky blue to deep London blue; often achieved through irradiation and heat treatment.
• Yellow to Orange: Natural hues, with the most prized being the golden-orange “Imperial Topaz.”
• Pink to Red: Rare and highly valued; natural pink is especially sought after.
• Green and Violet: Extremely rare and typically the result of treatment.

The value of these precious stones is influenced by their color saturation, clarity, size, and whether it has undergone any treatments. Imperial and natural pink or red topaz are among the most valuable varieties.

Optical Properties

• Luster: Vitreous
• Refractive Index: 1.606–1.638
• Birefringence: 0.008–0.010
• Pleochroism: Weak to moderate; varies with color

Topaz’s brilliance and transparency make it a favorite among gem enthusiasts. Its relatively high refractive index contributes to its sparkling appearance when properly cut.

Common Cuts and Applications of Topaz

Topaz is typically faceted into shapes such as oval, pear, cushion, and emerald cuts to maximize its brilliance. It is commonly used in various types of jewelry, including rings, earrings, pendants, and bracelets. Due to its perfect cleavage, protective settings are recommended, especially for rings.

Sri Lankan Uniqueness

Sri Lanka, historically known as Ceylon, is renowned for producing high-quality topaz gemstones. The country’s gem-rich regions, particularly around Ratnapura, yield these crystals celebrated for their exceptional clarity and vibrant colors. Sri Lankan topaz is esteemed in the global gemstone market for its superior quality and natural beauty.

At Luxiris Gems (PVT) Ltd., we take immense pride in offering authentic Sri Lankan topaz, each meticulously selected for its exceptional beauty and quality. Our commitment to ethical sourcing and excellence ensures that our clients receive gemstones that are not only stunning but also steeped in the rich heritage of Sri Lanka’s gemological legacy. If you are looking for your gem, you’re at the right place. Contact us and we’ll help you with finding you the ideal gemstone.