Why would a blue stone be sold as a pukhraj alternative? Because it is topaz, the same species as the golden sunehla stones, just in a different colour. Plenty of Pakistani buyers choose blue topaz for its look and its price when yellow sapphire costs more than they want to spend.

This natural blue topaz weighs 12.60 carats and comes from Brazil. It shows a bright sky blue in a transparent body, and at this size the colour is easy to enjoy.

Topaz is 8 on the Mohs scale: good for a ring with a thoughtful setting, even better for a pendant. It has a cleavage direction, so avoid sharp knocks.

Golden topaz is mostly left as mined, while some colours come from treatment. For this blue one, message us on WhatsApp and we will share what we know. Independent lab testing is your option if you want it.

Reference AG-000483. See other topaz stones to compare.

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 before you choose.

This particular stone

This listing is one natural topaz, known in Urdu as Sunehla, with a weight of 12.6 Carat. Its price is Rs. 16,500 — roughly Rs. 1,310 for each carat. Origin: Brazil. Treatment: treatment not tested. Quote reference AG-000483 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.

Above twelve carats you are into collector territory. Pieces this heavy are usually set as pendants or kept loose, and they are prized for the size of rough they came from. If you do set it, choose a bezel or a heavy claw to protect the edges.

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.