Heated sapphire is not a flaw. It is a trade custom, and a buyer is entitled to know where a given stone stands. With pukhraj, gentle heating is a long-standing way of evening out colour, and a stone that has never been through it commands a higher price. So the sensible first step with this 4.90 carat piece is a question: was it heated, and can that be confirmed?

Write to us quoting AG-000456 and we will tell you what we know. If you want proof beyond our word, independent lab testing is your choice, and we will help where we can.

What we can say plainly: it is a natural yellow sapphire from Africa, 4.90 carats, golden yellow, with a hardness of 9 on the Mohs scale. For a stone of this weight, the rate is accessible. Find similar sizes among our yellow sapphire stones.

Hardness is not the same as toughness. Sapphire resists scratching better than almost any gem, but a hard blow on an edge can still chip it. Choose a setting that covers the girdle, and take it off for heavy manual work.

Cash on Delivery covers all of Pakistan. Open the box, look the stone over, and only then pay. From Karachi we reach local addresses in 1–2 working days and other cities in 2–4; returns are open for 7 days. Read our yellow sapphire guide before deciding.

This particular stone

This listing is one natural yellow sapphire, known in Urdu as Pukhraj, with a weight of 4.9 Carat. Its price is Rs. 20,250 — roughly Rs. 4,133 for each carat. Origin: Africa. Treatment: treatment not tested. Quote reference AG-000456 when you message us about it. The photographs show this exact stone, so what arrives at your door is the piece you chose on screen.

Between two and six carats is the range most people choose for a gents' ring or a noticeable pendant. Here colour drives the price more than size does, which is why two stones of near-identical weight can be priced very differently.

On the Mohs scale yellow sapphire rates 9. Few materials will scratch it, so it copes well with everyday ring wear. A soak in warm water with a drop of mild soap and a soft brush keeps it bright; skip the ultrasonic cleaner if inclusions reach the surface.

Whoever you buy yellow sapphire from, make sure of three things: the stone is natural rather than lab-grown, glass or glass-filled; any treatment is stated in writing; and the weight quoted is the weight of the finished stone. We check every yellow sapphire for those three points before it is listed, and because you pay on delivery you can look at the stone — or have it tested — before any money changes hands.

We sell natural stones only and inspect each one before it is listed. Treatment for this stone: Treatment not tested. No lab report yet; independent testing welcome. As general background (not a statement about this stone): Most yellow sapphire (pukhraj) is heated to deepen and even out the colour; unheated stones exist and command a premium. Ask us on WhatsApp and we will tell you what we know about this exact stone; independent lab testing is available on request.

A certificate of authenticity is available on request for this stone, and independent laboratory testing can be arranged. Because you pay on delivery, you can also take the stone to a lab of your choice within the 7-day return window. Read more on our authenticity page.