Yellow Sapphire (Pukhraj Stone)

Ceylon (Sri Lanka) Pukhraj: Sourced primarily from the historic alluvial gravels of Ratnapura, Ceylon Yellow Sapphires are celebrated globally for their bright lemon, canary, and golden yellow hues, high natural clarity, and delicate silk rutile inclusions. Because fine Ceylon sapphires are 100% natural, unheated, and untreated corundum, they command the highest market value and gemological prestige.

Nigerian Pukhraj: Mined in West Africa, Nigerian yellow sapphires exhibit warm golden-yellow to honey tones with high crystal density and natural mineral hardness. Like Ceylon stones, our Nigerian sapphires are 100% natural and unheated, offering exceptional quality at an accessible price per carat.

Bangkok (Thailand) Pukhraj: Bangkok stones undergo traditional thermal enhancement to improve color uniformity and transparency. They offer an attractive, budget-friendly option for jewelry and traditional wear, with 100% upfront disclosure of thermal treatment on every certificate. Compare them in detail in our Yellow Sapphire Buying Guide.

Yes. Our premium Ceylon and Nigerian Yellow Sapphires are guaranteed 100% natural, unheated, and untreated corundum gemstones. They retain their natural crystal growth structure, microscopic rutile silk needles, and distinct hexagonal color zoning untouched by thermal or chemical enhancement. For buyers seeking budget-friendly alternatives, our Bangkok collection includes traditionally heated corundum with complete transparency — every gemstone clearly states its treatment status in its specifications and verifiable lab testing report.

Every Yellow Sapphire sold by Ratna Gems is individually examined and accompanied by an independent gemological laboratory testing report. The certificate identifies the mineral species (Natural Corundum), gemstone variety (Natural Yellow Sapphire), exact carat weight, refractive index (1.762–1.770), specific gravity (3.99–4.01), and explicit treatment disclosure (Untreated / Natural Silk). Certified laboratory testing confirms that stones are completely free from beryllium diffusion, lead-glass filling, or synthetic alteration. Each certificate includes a unique report number and QR code for direct verification on the issuing laboratory’s 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 gemstone trade and traditional practice, weight is frequently discussed 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 prevent confusion, Ratna Gems displays both exact Carat weight and traditional Ratti conversions on every product page and gem-testing report. Read our detailed guide on sizing in the Yellow Sapphire Ratti Sizing Guide.

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

• Customary Metals: Yellow Gold, Panchdhatu, or Ashta Dhatu alloys are traditionally favored.
• Traditional Placement: Customarily worn on the index finger (Tarjani) of the working hand.
• Traditional Timing: Customary traditions often observe Thursday mornings during the waxing moon (Shukla Paksha).
• Substitutes (Upratna): Traditional literature often mentions natural Citrine (Sunela) or Yellow Topaz 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.