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. Fine unheated Ceylon yellow sapphires are the benchmark in the trade and among the most sought after.

Nigerian Pukhraj: Mined in West Africa, Nigerian yellow sapphires exhibit warm golden-yellow to honey tones with high crystal density and natural mineral hardness. Our Nigerian sapphires, like our Ceylon stones, are listed as natural and unheated, and cost less per carat.

Bangkok (Thailand) Pukhraj: Bangkok is a trade name, after the Thai gem-trading center, not a mine. Our Bangkok yellow sapphires are heated and glass-filled, which gives a rich golden color at a budget-friendly price, and many customers wear them on their astrologer’s or Pandit ji’s advice. They need gentle care: no ultrasonic cleaning, acids or jeweler’s torch. Compare them in detail in our Yellow Sapphire Buying Guide.

Our Ceylon and Nigerian Yellow Sapphires are natural and unheated. 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 yellow sapphires are heated and glass-filled, and every one states this in its specifications.

Every Yellow Sapphire sold by Ratna Gems is individually tested and comes with a report from an independent gem testing laboratory. The report identifies the stone and records the details it prints, usually its carat weight, dimensions, refractive index and hardness. The product specification gives the full detail, including the mineral species (Natural Corundum), gemstone variety (Natural Yellow Sapphire) and treatment status (for example, Untreated / Natural Silk). Typical values are refractive index 1.762–1.770 and specific gravity 3.99–4.01. The specification states that our Ceylon and Nigerian stones are unheated and that our Bangkok yellow sapphires are heated and glass-filled. Each report carries its own report number, which you can quote to the laboratory to check it.

Lab Report Included: Every gemstone comes with a report from an independent gem testing laboratory at no extra charge. If you specifically require an additional report from GII, IIGJ, or IGI, you can select it from the certification dropdown on the product page (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 Pakki (Pukka) Ratti, the trade standard used on our listings = 182.25 milligrams ≈ 0.91 Carat.
• 1 Kachi (Sunari) Ratti, the lighter goldsmith’s ratti = 121.5 milligrams ≈ 0.61 Carat.

To prevent confusion, Ratna Gems displays both exact Carat weight and traditional Ratti conversions on every product page; the gem-testing report records the carat weight. 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.