Ten carats of sapphire or ruby would be a very different conversation. Ten carats of topaz stays within reach of an ordinary jewellery budget, and this 9.85 carat Brazilian stone shows why topaz is the sensible choice for a big gem: size does not trigger a steep jump in the per-carat rate.

Brazil is a classic topaz source, and this piece is sold as pukhraj, sunehla in the Urdu trade name. It is natural, rated 8 on the Mohs scale, so scratches are unlikely in normal wear. Topaz does split along a cleavage plane under a sharp impact, though, so a ring setting should guard the edges of a stone this size.

What to ask before you buy

Heating is not the norm for yellow topaz, but it does account for a few shades in the family. Ask on WhatsApp with reference AG-000497 and we will tell you what we know. Independent lab testing is your option. You can also browse the wider topaz collection to see how this weight sits among its neighbours.

It travels Cash on Delivery: check it in front of the rider, then pay. Expect it in 1–2 working days in Karachi or 2–4 in other big cities, and remember the 7-day return policy if it does not suit you. Read our topaz guide first.

This particular stone

This listing is one natural topaz, known in Urdu as Sunehla, with a weight of 9.85 Carat. Its price is Rs. 10,880 — roughly Rs. 1,105 for each carat. Origin: Brazil. Treatment: treatment not tested. Quote reference AG-000497 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.