Pearl Stone (Moti Ratna)

Freshwater Cultured Pearl: Cultivated organically in freshwater mussels (Hyriopsis cumingii), freshwater pearls develop thick, durable nacre layers in round, button, and oval shapes. With soft white to warm cream body colors, they offer genuine natural beauty, everyday durability, and accessible pricing.

Keshi Cultured Pearl: An accidental, highly prized occurrence where the mollusk expels the inserted nucleus during culturing but continues to secrete nacre. Because Keshi pearls lack an artificial seed nucleus, they consist of 100% solid, pure natural nacre, resulting in remarkable orient, organic baroque shapes, and intense metallic luster.

The Basra Pearl Reality: Historic natural wild saltwater pearls from the Persian Gulf (Basra) have been commercially extinct for over 70 years due to offshore oil development and depleted marine oyster banks. Genuine Basra pearls exist today almost exclusively in antique museums and royal heirloom collections. Ratna Gems explicitly identifies every pearl by its true cultured variety, rejecting deceptive trade practices that falsely market modern cultured pearls as “Basra pearls.” Read more in our Pearl (Moti) Buying Guide.

Yes. All pearls in our collection are guaranteed 100% natural organic cultured pearls formed organically inside living mollusks. Every pearl is completely untreated, unheated, undyed, and unbleached, retaining its authentic natural body tone (soft white, cream, and delicate silver overtones) and natural microscopic nacre concentric rings untouched by artificial dye baths, irradiation, or chemical whitening. We never sell simulated glass, plastic, wax-filled, or shell-composite (Majorica) beads. Detailed high-resolution photography and video on each listing showcase the exact natural luster and organic surface features of the stone.

Every Pearl Stone at Ratna Gems is individually tested and accompanied by an independent gemological laboratory testing report. The certificate identifies the physical nature (Freshwater Cultured Pearl, Keshi Cultured Pearl, or Baroque Cultured Keshi Pearl), exact carat and ratti weight, dimensions, specific gravity (2.60–2.85), refractive index (1.52–1.66 aggregate), hardness (2.5–4.5 on Mohs scale), and confirms untreated natural organic status. Each certificate features a unique report number and QR code verifiable directly 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).

Because pearls are organic gemstones composed of calcium carbonate (aragonite) and organic conchiolin protein, their surface hardness is 2.5–4.5 on the Mohs scale, making them sensitive to acids, friction, and chemicals:

• “Last On, First Off” Principle: Always put your pearl jewelry on after applying perfumes, hairsprays, cosmetics, and body lotions. Alcohol and mild cosmetic acids can etch and permanently dull the delicate nacre layers.
• Safe Cleaning: After each wear, gently wipe your pearl with a soft, clean, slightly damp lint-free cloth to remove skin oils. Never use ultrasonic machines, steam cleaners, toothbrushes, vinegar, or commercial jewelry detergents.
• Breathable Storage: Store pearls flat in a soft cloth or silk pouch separate from harder faceted gemstones (such as Sapphires, Diamonds, or Rubies) to prevent abrasion. Avoid sealed plastic bags, as pearls require ambient humidity to prevent dehydration and brittleness.

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

• Customary Metals: Sterling Silver (925 Silver) is traditionally considered the most harmonious setting for pearls, while White Gold and traditional Panchdhatu / Ashta Dhatu alloys are also favored.
• Traditional Placement: Customarily worn on the little finger (Kanishtha) or index finger of the working hand.
• Traditional Timing: Customary traditions often observe Monday mornings during Shukla Paksha (waxing moon) at sunrise.
• Traditional Substitutes (Upratna): Natural Moonstone (Chandrakant) is traditionally cited in historical texts as an alternative.

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.