Natural Indian Moonstone (Chandramani) 5.12 Carat (5.63 Ratti) Oval Cabochon
SKU: SGTL008596
Gemstone & Physical Specifications
Details of this stone, with the standard gemological properties of its species.
- Weight
- 5.12 Carat (≈ 5.63 Ratti)
- Shape / Cut
- Oval Cabochon
- Treatment
- Un-Heated & Un-Treated
- Transparency / Clarity
- Translucent
- Hardness
- 6.0 - 6.5 on the Mohs Scale
- Specific Gravity (S.G.)
- 2.56 - 2.65
- Conclusion / Identification
- Natural Moonstone (Chandramani)
- Dimensions
- 16 x 11 x 9 mm
- Origin
- Indian
- Color
- Pearly White
- Species / Mineral
- Feldspar Group
- Refractive Index (R.I.)
- 1.52 - 1.54
- Fluorescence
- Inert
Detailed Product Description
Natural Indian Moonstone (Chandramani) – 5.12 Carat (5.63 Ratti) Oval Cabochon
This Natural Indian Moonstone (Chandramani) weighs exactly 5.12 Carats (5.63 Ratti) with calibrated dimensions of 16 x 11 x 9 mm. Expertly cut and polished into an exquisite Oval Cabochon, this Earth-mined gemstone displays a mesmerizing pearly-white translucent body with soft silvery-white adularescent sheen with an enchanting, billowing adularescence that glides smoothly across the curved dome under incident light.
Mineralogical Identity & Optical Properties: Moonstone is a celebrated gem variety of the Feldspar (potassium aluminum silicate, KAlSi3O8) mineral group, specifically intergrown orthoclase and albite. Its defining optical hallmark—adularescence—is an optical interference phenomenon produced by light scattering (diffraction) between alternating microscopic sub-micron lamellae of orthoclase and albite feldspar within the crystal lattice. Under gemological examination, it exhibits a refractive index of 1.518 to 1.526, a specific gravity of 2.56 to 2.60, and a Mohs hardness of 6.0 to 6.5.
Cultural Legacy & Traditional Context: Celebrated historically in Hindu lore as frozen moonlight and revered in Indian lapidary traditions as Chandrakant Mani or Chandramani, Moonstone holds a sacred place in gemology. In Vedic astrology, it is the premier secondary substitute (Upratna) for Natural Pearl (Moti) associated with the Moon (Chandra). It is also recognized globally as an official June birthstone alongside Pearl and Alexandrite. It is customarily mounted in Sterling Silver (925 Silver) or Panchdhatu for rings and pendants.
Please Note: Ratna Gems shares these historical, cultural, and gemological details solely for educational awareness. We sell all gemstones strictly on the basis of verified physical authenticity, mineral quality, and accredited laboratory certification, and make no astrological, metaphysical, or curative claims.
Care Instructions
- Clean gently with mild soap and lukewarm water, then dry with a soft microfiber cloth.
- Avoid ultrasonic cleaners and steam cleaning; thermal shock and vibration can affect feldspar cleavage planes.
- Avoid contact with harsh household chemicals, strong acids, ammonia, and abrasive scouring pastes.
- For regular ring wear, a protective bezel setting is recommended, and the ring should be removed during strenuous activities.
Frequently Asked Questions
Is this Moonstone (Chandramani) 100% natural, unheated, and untreated?
Yes. This gemstone is guaranteed 100% Earth-mined natural feldspar (Moonstone). It has not been subjected to artificial chemical dyeing, clarity coating, or thermal enhancement, retaining its authentic natural adularescent shimmer. Every gemstone is accompanied by an accredited independent gemological laboratory certificate.
What causes the floating blue/silvery sheen (adularescence) in Moonstone?
Adularescence is an optical diffraction phenomenon caused by microscopic internal structure. As moonstone cools during subterranean crystallization, orthoclase and albite feldspars separate into stacked, alternating micro-layers. When light enters these lamellar layers, it scatters and reflects, producing a billowy, luminous glow that appears to float just below the surface of the cabochon dome.
How does Carat weight compare to traditional Ratti for this stone?
This gemstone weighs 5.12 Carats, corresponding to 5.63 Pakki Ratti (1 Carat = 200 mg; 1 Pakki Ratti ≈ 0.91 Carat). Both measurements are explicitly documented on your official laboratory test report.
How is this Moonstone certified, and can I choose international testing?
Every Moonstone includes an independent accredited gemological laboratory testing report verifying natural feldspar (moonstone) identity, cut, dimensions, specific gravity (2.56–2.60), refractive index (1.518–1.526), hardness (6.0–6.5), and unheated natural status. If you specifically require an additional report from GII, IIGJ or IGI, you can select it directly from the certification dropdown on this product page upon request (official laboratory testing fees apply in advance on a non-refundable basis).
Can Moonstone be chosen as a substitute for Natural Pearl (Moti)?
In traditional Vedic astrology, Moonstone (Chandrakant Mani) is widely recognized as the premier secondary substitute (Upratna) for Natural Pearl (Moti) in Moon (Chandra) practices. This is a traditional belief-based selection practice; personal suitability should always be confirmed with an experienced astrological consultant.
More from Moon Stone
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Natural Indian Moonstone (Chandramani) 7.22 Carat (7.93 Ratti) Oval Cabochon
Natural Indian Moonstone (Chandramani) 5.93 Carat (6.52 Ratti) Oval Cabochon
Natural Indian Moonstone (Chandramani) 8.16 Carat (8.97 Ratti) Oval Cabochon
Customer Reviews
Verified feedback across our certified Moon Stone collection. Because each natural gemstone is rare and one-of-a-kind, reviews reflect genuine patron experiences with this gemstone family.