Certified Keshi Pearl 5.87 Carat (6.45 Ratti)

Keshi Pearl Stone (Moti Ratna) – 5.87 Carat (6.45 Ratti) Baroque Shape

This Keshi Pearl Stone (Moti Ratna) – 5.87 Carat (6.45 Ratti) Baroque Shape weighs exactly 5.87 Carats (6.45 Ratti) with calibrated dimensions of 15 x 9 x 6 mm. Exhibiting an attractive Baroque Shape, this Earth-formed gemstone displays a soft creamy-white overtone, deep orient, and the characteristic silky lustre unique to natural biogenic pearls.

Biogenic Identity & Physical Constants: Pearl is an organic biogenic gemstone composed of microscopic hexagonal platelets of Calcium Carbonate (principally Aragonite, CaCO₃) bonded by organic horn-like protein fibers known as conchiolin. With a Mohs hardness of 2.5 to 4.5, it exhibits a refractive index of 1.52 to 1.69 (birefringent pseudo-uniaxial negative), a specific gravity of 2.60 to 2.85, and an opaque optical nature. The characteristic pearl glow (orient) is produced by the physical interference and diffraction of light reflecting from successive semi-translucent micro-layers of aragonite platelets.

Formation Profile & Distinctive Character: Keshi pearls are organic, non-nucleated biogenic gems that form organically during the pearl culturing process when the mollusk rejects or expels an implanted bead, yet continues depositing concentric layers of pure nacre. Because Keshi pearls lack a solid spherical nucleus, they consist of 100% solid natural nacre throughout their structure, giving them extraordinary durability, rich orient, and an individual, artistic free-form baroque silhouette.

Cultural Legacy & Traditional Wearing: Known in Sanskrit as Mukta (मुक्ता) and universally in Indian tradition as Moti Ratna (मोती रत्न), pearl is the primary gemstone associated with the Moon (Chandra / चंद्र). In classical Vedic traditions, it is customarily set in Sterling Silver (925 Silver) for rings or pendants, traditionally worn on the little finger (Kanisthika) or ring finger (Anamika) of the working hand on Monday mornings during Shukla Paksha.

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

• "Last on, first off": Always apply cosmetics, perfumes, hairsprays, and lotions before putting on pearls, and remove your pearl jewellery first upon returning home.
• Never use ultrasonic or steam cleaners: Heat, vibrations, and steam can permanently dehydrate organic conchiolin and degrade delicate nacre luster.
• Clean gently by wiping with a clean, lint-free microfiber cloth slightly dampened with lukewarm water after wearing. Pat completely dry before storing.
• Avoid contact with acids, vinegars, household detergents, chlorine, and rough abrasive surfaces.
• Store flat in a soft velvet or fabric-lined jewellery pouch; avoid airtight plastic containers which can dehydrate organic nacre.

Frequently Asked Questions