Yellow sapphire is my favourite gemstone. I have handled thousands of them, and a fine, natural, unheated Sri Lankan yellow sapphire still stops me every time: a clean, glowing canary-to-golden colour that seems to hold light inside it. Known in India as Pukhraj and linked with the planet Jupiter in Vedic astrology, it is also one of the most faked and mis-sold stones in the world. This guide is everything I want our customers to know before they buy one. Leander, Roho Jewels
Natural, unheated Sri Lankan yellow sapphires from our current stock. All available.
What is yellow sapphire?
Yellow sapphire is the yellow variety of corundum, the same mineral as blue sapphire and ruby. It is very hard (9 on the Mohs scale, second only to diamond), so it is a practical stone for rings that are worn every day. The yellow comes from tiny amounts of iron and natural colour centres in the crystal.
Sri Lanka (Ceylon) is the classic source. Its gem gravels around Ratnapura have produced fine yellow sapphires for over two thousand years, and Ceylon yellows are known for their bright, clean, "lit from within" colour. Fine yellow sapphires also come from Thailand, Madagascar and East Africa, but Sri Lanka remains the reference point.
Sorting a parcel: yellow sapphires laid out by size and colour, with a few blue sapphires from the same parcel.
Pukhraj, Jupiter and Jyotish
In Jyotish (Vedic astrology), yellow sapphire is Pukhraj (also called Pushparaga or Guru Ratna), the gemstone of Jupiter, known as Guru or Brihaspati. Jupiter is the planet of wisdom, knowledge, prosperity, marriage and good fortune, and Pukhraj is one of the nine Navaratna gems.
Traditional practice, as most astrologers describe it:
- Who wears it: usually recommended when Jupiter is favourable in a person's chart, often for Sagittarius (Dhanu) and Pisces (Meena) ascendants. Always ask your astrologer first.
- Setting: traditionally set in gold, often with an open back so the stone touches the skin.
- Finger and day: worn on the index finger of the right hand, first put on on a Thursday morning (Guruvar), Jupiter's day.
- Weight: commonly prescribed in ratti rather than carats. In our listings we show both (1 carat is about 1.1 ratti).
- Quality: classical texts ask for a stone that is natural, clean and free of defects. That is why astrologers insist on unheated, untreated Pukhraj.
Colour: the most important factor
With yellow sapphire, colour drives most of the value. Look at three things: hue (pure yellow, not greenish or brownish), tone (how light or dark) and saturation (how vivid). The most sought-after stones are a bright canary to rich golden yellow with no brown or green.
Pale lemon
Light, lower value
Canary
Bright, classic
Golden
Rich, top colour
Deep golden
Warm, intense
Brownish / greenish
Muddy, avoid
Simplified colour guide. Real stones vary, and personal taste matters.
Very pale lemon stones are pretty and affordable, but the price climbs steeply as colour becomes richer. Be careful with stones that look intensely orange-yellow at a low price: that colour is often the result of beryllium treatment.
Different yellows, all natural and unheated: from bright canary to deep golden.
Clarity: clean, but natural
Yellow sapphire is expected to be eye-clean: no inclusions you can see without magnification when looking from the top. Under a loupe, a natural stone will usually show something: fine "silk" needles, tiny crystals, or healed fingerprints. These are not flaws to be scared of. Intact, unaltered inclusions are often the evidence a lab uses to confirm that a stone is natural and has never been heated.
What to avoid: open cracks that reach the surface, cloudy patches that dull the colour, and stones that are "too perfect" for a low price, which is a typical sign of lab-grown material.
Eye-clean natural yellow sapphires, filmed in daylight without filters.
Cut: colour first, sparkle second
A good cut makes the colour look even and bright from edge to edge. The classic cuts for yellow sapphire are oval and cushion (the most common shapes from rough), and octagon step cuts (emerald cuts), which show off a pure, clean colour like a pool of light.
- Check for a "window": a washed-out, see-through area in the centre means the stone is cut too shallow.
- Native cuts: Sri Lankan cutters traditionally cut deep to keep weight. These stones weigh more for their face-up size, but often show richer colour. Read more in our guide to antique gemstone cuts.
- Symmetry: a well-cut stone looks balanced and lively when you rock it in your hand, with no dark "extinction" areas.
Oval, cushion, pear and step cuts: each shows the colour in a different way.
Warning: most Pukhraj on the market is not what it claims
This is the part I care most about. In our experience, most "Pukhraj" sold in markets, small shops and online is fake, treated or poor quality, and buyers are charged natural, untreated prices for it. People pay thousands for a stone they believe is unheated Ceylon Pukhraj, and receive glass-filled, beryllium-treated or even lab-grown material worth a small fraction of the price. Here is what is commonly passed off as Pukhraj:
| What is sold as "Pukhraj" | What it really is | How it is exposed |
|---|---|---|
| Yellow glass | Not a gemstone at all | Gas bubbles, swirl marks, low hardness, chipped edges |
| Citrine or yellow topaz | A different, much cheaper gem | Lab test: different refractive index and density |
| Lab-grown yellow sapphire | Same material, made in a factory in days | Curved growth lines, gas bubbles; a lab report says "synthetic" |
| Glass-filled (lead-glass) sapphire | Low-grade, fractured material held together by glass | Flash effect and gas bubbles in the cracks; can be damaged by heat or acids |
| Beryllium-diffused sapphire | Pale or off-colour stone turned bright yellow in a furnace | Needs an advanced lab (LA-ICP-MS); colour can be only skin-deep |
| Heated sapphire | Natural, but colour improved by heat | Altered inclusions; report says "indications of heating" |
| Irradiated sapphire | Colour added by radiation | Colour can fade in sunlight; report notes instability |
A treated stone is not automatically "bad", as long as it is disclosed and priced honestly. The problem is non-disclosure: a treated stone sold at an untreated price. And for anyone wearing Pukhraj for Jyotish, most astrologers consider a treated or synthetic stone unsuitable.
1. Ask for an independent gemmological lab report for the exact stone (check the weight, measurements and photo match).
2. Look for the words "natural corundum", "natural sapphire" and "no indications of heating".
3. Verify the report number on the lab's website or by QR code.
4. Be suspicious of large, bright, clean stones at low prices. Fine unheated yellow sapphire is rare and is never cheap.
What we offer: natural, unheated, certified
At Roho Jewels, every yellow sapphire we sell is natural, unheated and untreated, and we provide independent lab certification. No glass filling, no beryllium, no heat, no synthetics. We would rather sell fewer stones than sell one we cannot stand behind.
Left: an IIGJ gemmological report for one of our stones: 12.77 ct yellow octagon step cut, natural corundum, natural sapphire, no indications of heating. Right: certified stones ready for the next step.
We sell yellow sapphires two ways:
- Certified loose stones, from small matched pairs to rare antique stones over 30 carats, each with its weight in carats and ratti.
- Finished jewellery: ready-made yellow sapphire pieces from our stock. We do not make custom pieces.
More natural, unheated yellow sapphires from our vault. Message us for the details of any stone in these videos.
Shop natural yellow sapphires (Pukhraj)
Antique unheated yellow sapphire pair, 57.02 ct (62.7 ratti)Natural Ceylon · unheated · matched ovalsView → Antique unheated yellow sapphire, 39.42 ct (43.3 ratti)Natural Ceylon · unheated · ovalView → Antique unheated yellow sapphire, 30.47 ct (33.5 ratti)Natural Ceylon · unheated · oval cushionView → Antique unheated yellow sapphire, 17.60 ct (19.3 ratti)Natural Ceylon · unheated · ovalView →See every stone in our Yellow Sapphires (Pukhraj) collection, our Jyotish gemstones, and finished yellow sapphire jewellery. Many of the stones in the videos above are not listed yet, so message us with the weight, shape and budget you need and we will send videos and the lab report. Shipping is covered by us on every order.
Frequently asked questions
Is yellow sapphire the same as Pukhraj?
Yes. Pukhraj is the Hindi name for yellow sapphire. Be careful: some sellers use "Pukhraj" for yellow topaz or citrine, which are different and much cheaper gems. A lab report should say "natural sapphire" or "natural corundum".
How can I tell if my Pukhraj is real?
You cannot be sure by eye. Only a gemmological lab can confirm that a stone is natural sapphire and whether it has been heated or treated. Ask for a report from an independent lab and check that it matches the stone.
Why is unheated yellow sapphire so expensive?
Most yellow sapphire on the market has been heated or treated to improve its colour. Stones that are naturally beautiful without any treatment are a small fraction of what is mined, and they are in high demand from both collectors and Jyotish buyers.
How many ratti should my Pukhraj be?
That is a question for your astrologer. We list every stone in both carats and ratti, and we can help you find a stone in the weight you were given.
Do you sell Pukhraj jewellery?
We sell certified loose Pukhraj (yellow sapphire) stones and finished jewellery from our stock; we do not make custom pieces. A loose stone can be set by your own local jeweller.
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