Seven carats of yellow topaz is a stone people notice. Among topaz it is a medium-large weight, big enough to be the centre of a ring or pendant and be seen across a room. Because the gem forms large crystals, you get real size without a big bill.

This natural stone is listed with Pakistan, Katlang, as its origin, and it is sold under the names pukhraj and sunehla.

Judging yellow topaz

Check that the colour is even and the stone is transparent. Turn it under a lamp to see whether the brilliance looks lively. Ask about treatment: yellow topaz is mostly left alone, though a few colours in the family come from heating, and we will share what we know about this one on WhatsApp.

At 8 on the Mohs scale it suits a ring, provided the setting protects the edges. We can discuss a custom silver ring setting with you.

The reference is AG-000489. Related stones: topaz gemstones.

The parcel comes Cash on Delivery, so the stone is in your hand before you pay a rupee. Karachi: usually 1–2 working days. Elsewhere in Pakistan: usually 2–4. Returns: 7 days, unused and in its packing. Before you choose, read our gemstone buying guide.

This particular stone

This listing is one natural topaz, known in Urdu as Sunehla, with a weight of 7.1 Carat. Its price is Rs. 15,000 — roughly Rs. 2,113 for each carat. Origin: Pakistan. Treatment: treatment not tested. Quote reference AG-000489 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.

From six carats up a stone becomes the centre of attention. It wants a broader shank or a secure claw setting and suits an occasion ring, a signet or a centre pendant. Clean natural material of this size turns up far less often, and the per-carat rate reflects that.

On the Mohs scale topaz rates 8. 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 topaz 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 topaz 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): Yellow and golden topaz is usually untreated, though some colours are produced by heating. 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.