Ruby stones (Manik Ratna)

Mozambique Ruby: Mined primarily in the Montepuez region of Mozambique, these rubies are globally renowned for their rich crimson to “pigeon blood” red colors, exceptional crystal transparency, and vivid natural fluorescence. Because Mozambique rubies in our fine collection are 100% natural, unheated, and untreated corundum, they command premier gemological prestige and high collector value.

African Ruby: Sourced from deposits across East Africa (including Madagascar, Tanzania, and Kenya), African rubies display deep red to purplish-red hues with dense crystalline structure. They offer genuine, natural unheated corundum with substantial presence at an accessible price per carat.

Bangkok (Thailand) Ruby: Thailand is the world’s foremost cutting and processing hub for ruby. Bangkok rubies undergo traditional thermal treatment to improve clarity and intensify red coloration, or lead-glass filling for budget jewelry. They provide an economical option with 100% upfront disclosure of treatment on every lab certificate. Learn more in our Ruby (Manik) Buying Guide.

Our premium Mozambique and African Rubies are guaranteed 100% natural, unheated, and untreated corundum. They preserve their original crystal growth structures, natural rutile silk needles, and distinct hexagonal color zoning untouched by thermal or chemical alterations.

For buyers seeking affordable options, our collection also includes Bangkok stones with complete disclosure:

• Heated and Treated: Subjected to standard thermal heating to enhance transparency and color stability.
• Heat Treated & Glass Filled: Infused with high-refractive-index glass to heal surface fissures in cost-effective stones.

Every stone’s exact treatment classification is clearly marked on its product card and verified on its independent lab testing certificate.

Every Ruby (Manik) at Ratna Gems is individually tested and certified by an independent, accredited gemological laboratory. The official gem-testing report confirms the mineral species (Natural Corundum), gemstone variety (Natural Ruby), precise carat weight, refractive index (1.762–1.770), specific gravity (3.99–4.01), hardness (9 on Mohs scale), and full treatment disclosure (Untreated Natural Corundum vs. Heated/Filled). Each certificate includes a unique report ID and QR code verifiable directly on the testing laboratory’s official online portal.

Optional International Certification: Every gemstone includes an independent accredited laboratory certificate at no charge. If you specifically require an additional report from GIA, GII, or IGI-GTL (IIGJ), 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 contexts, gemstone weight is frequently specified in Ratti, whereas international gemological testing laboratories measure 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 full transparency, Ratna Gems presents both exact Carat weight and traditional Ratti equivalents across all product descriptions, specification tables, and laboratory certificates. For detailed sizing guidelines, consult our Ruby (Manik) Buying Guide.

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

• Customary Metals: Yellow Gold, Copper, Panchdhatu, or Ashta Dhatu alloys are traditionally favored.
• Traditional Placement: Customarily worn on the ring finger (Anamika) of the working hand.
• Traditional Timing: Customary traditions often observe Sunday mornings at sunrise during the waxing moon (Shukla Paksha).
• Traditional Substitutes (Upratna): Classical texts traditionally cite natural Red Spinel (Lal Spinel) or Red Garnet (Raktamani) as accessible historical alternatives.

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.