A natural topaz of 7.10 carats, about 7.80 ratti, at Rs. 15,000 – roughly Rs. 2,113 per carat. Its colour is recorded as blue.

The strongest blue of the seventeen

Measured across the photograph, about 89% of this stone's face reads as blue, and 69% reads as a strong, saturated blue rather than a washed pale tint. That second figure is the highest of the seventeen stones in this category, where the palest reads 0.86%. If depth of blue is what you are after, this is the stone.

It was previously listed as Natural Yellow Topaz (Sunehla), which it plainly is not. Sunehla is the Urdu name for yellow topaz; nothing in this category is yellow.

Where blue topaz comes from, which you should know before buying any

This is the single most useful fact about the stone, and the old copy did not mention it.

Almost all blue topaz is irradiated and then heated. Natural blue topaz exists but is rare and very faint. The strong blues you see in every shop begin as colourless topaz, are irradiated to produce a colour centre, and are then heated to stabilise it. The result is permanent, does not fade in normal wear, and is accepted everywhere in the trade.

It is not a secret and it is not a defect. But a seller who lets you believe a deep blue topaz is natural blue is misleading you, and the price difference between treated and genuinely natural blue is enormous. For this stone the treatment has not been tested and there is no laboratory report – the honest expectation is the usual one: irradiated and heated, like effectively all of it.

Shape and cut

A near-square cushion, about 1.11 times as long as it is wide, brilliant-faceted, with its outline filling about 81% of its bounding box. It is not a step cut and not a round brilliant; no stone in this category is either, which is why those names were refused.

Mohs 8, and the cleavage

Topaz is 8 on the Mohs scale, but it has perfect basal cleavage: a plane along which a sharp knock splits it cleanly regardless of hardness. For a seven carat stone on a hand, ask for a bezel. No ultrasonic cleaner, no steam, no sudden temperature change. Warm water, mild soap, a soft brush.

Ordering

One stone, sold once. Message us on WhatsApp for more photographs or a video, and we deliver across Pakistan.

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. Treatment: treatment not tested. Quote reference GS-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, 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): 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.