At 9.55 carats and Rs. 8,600, this blue topaz works out at about Rs. 901 per carat. In the topaz family, that per-carat rate tells you the colour is the usual commercial blue rather than a rare shade, and that you are buying a large stone cheaply compared with sapphire or aquamarine.

The blue itself is the result of irradiation and heating, which is how the trade produces nearly all blue topaz and is the reason the supply is so plentiful. The colour does not fade in normal wear. If you want to know more about this exact piece, mention GS-BL-0004 when you message us.

Setting advice

A stone near 9.5 carats has real presence, so a closed or bezel-style silver setting that wraps the girdle is wise. Topaz scores 8 on Mohs, hard enough for a ring, yet it can cleave if hit on a corner. A pendant is the gentlest option, a ring the most expressive one.

Compare similar weights in the blue topaz listings before you decide, because several nearby pieces share almost the same per-carat figure.

Cash on Delivery is available across Pakistan, so you inspect the stone before paying, and returns are accepted within 7 days of delivery. Before you choose, read our blue topaz guide.

This particular stone

This listing is one natural blue topaz with a weight of 9.55 Carat. Its price is Rs. 8,600 — roughly Rs. 901 for each carat. Treatment: treatment not tested. Quote reference GS-BL-0004 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 blue 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 blue 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 blue topaz for those three points before it is listed, a certificate is available on request, 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. Certificate available on request. As general background (not a statement about this stone): Blue topaz gets its blue colour from irradiation and heating — this is standard for the stone and the colour is stable. 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.