Cat's Eye Stones (Lahsuniya)

Chrysoberyl Cat’s Eye: In international gemology, the term “Cat’s Eye” without a prefix refers strictly to the mineral Chrysoberyl (BeAl2O4). With a Mohs hardness of 8.5 and a high refractive index (1.746–1.755), chrysoberyl exhibits an extraordinarily sharp, luminous chatoyant band and the famous “milk and honey” optical effect. Because of its rarity, fine Chrysoberyl commands premium pricing (often ₹25,000–₹1,00,000+ per carat).

Quartz Cat’s Eye: A genuine, natural macrocrystalline quartz (SiO2) containing parallel fibrous inclusions (such as asbestos or amphibole sillimanite) that produce a distinct moving cat’s eye band. With a Mohs hardness of 7.0 and refractive index of 1.544–1.553, Quartz Cat’s Eye offers an authentic, Earth-mined, and highly affordable choice for traditional jewelry (typically ₹200–₹400 per carat). Our in-stock collection consists of natural Indian Quartz Cat’s Eye with 100% upfront mineral species disclosure on every lab certificate. Learn more in our Cat’s Eye (Lehsunia) Buying Guide.

The captivating slit-like eye effect seen in Lahsuniya is known scientifically as Chatoyancy (derived from the French oeil de chat, meaning “cat’s eye”):

• Internal Structure: As the crystal forms, millions of microscopic, parallel needle-like mineral fibers align along the crystal axis. When the stone is cut into a smooth, domed cabochon perpendicular to these fibers, light reflects off them as a bright, concentrated band across the center of the dome.
• Evaluation Criteria: A high-quality cat’s eye exhibits a straight, sharply defined luminous line that extends uninterrupted from edge to edge and glides smoothly across the surface as the stone is tilted.
• Lighting Conditions: Chatoyancy is best observed under a single point light source (such as direct sunlight or a focused penlight). Under diffuse fluorescent room lighting, the band may appear wider and softer.

Every Cat’s Eye at Ratna Gems is individually tested by an independent, accredited gemological laboratory. The laboratory testing report confirms the exact mineral species (Natural Quartz), gemstone variety (Natural Quartz Cat’s Eye), precise carat weight, refractive index (1.544–1.553), specific gravity (2.65), and confirms 100% natural, unheated, untreated authenticity. Each report features a unique laboratory certificate ID and QR code for direct verification on the testing laboratory’s official portal.

Optional International Certification: Every gemstone includes an independent accredited laboratory certificate at no charge. If you specifically require an additional report from GII, IIGJ, or IGI, you can select it directly from the certification dropdown on any product page upon request (official laboratory testing fees apply in advance on a non-refundable basis).

In Indian trade and traditional practices, gemstone weight is frequently quoted in Ratti, while international gemological laboratories record weight strictly in Carats (ct):

• 1 Carat = 200 milligrams (0.20 grams).
• 1 Traditional Sunari Ratti ≈ 0.91 Carats (approx. 182 milligrams).
• 1 Pakki / Standard Ratti ≈ 0.96 Carats.

To ensure complete clarity and transparency, Ratna Gems displays both exact Carat weight and traditional Ratti conversions across all product listings and testing certificates. For detailed sizing advice, consult our Cat’s Eye Buying Guide.

For customers observing classical Indian customs, traditional literature outlines the following customary conventions:

• Customary Metals: Sterling Silver (925 Silver), Panchdhatu, or Ashta Dhatu alloys are traditionally favored.
• Traditional Placement: Customarily worn on the middle finger (Madhyama) or little finger (Kanishtha) of the working hand.
• Traditional Timing: Customary traditions often observe Tuesday or Saturday evenings at twilight during the waning moon (Krishna Paksha).

Please Note: Ratna Gems shares these details solely for cultural and informational awareness for customers seeking traditional jewelry. We sell all gemstones strictly on the basis of verified physical authenticity, mineral quality, and certified origin, and make no astrological, metaphysical, or medical claims.