A natural colourless topaz of 5.80 carats, about 6.37 ratti, at Rs. 11,600 – Rs. 2,000 per carat.

The nearest to colourless of the thirteen, and what that is worth

"Colourless" is the claim on the label, so it should be measured rather than asserted.

Across the photograph, the share of this stone's face carrying a visible yellow-green cast is under 9% – the lowest of the thirteen stones in this category, where the most tinted carries about 39%, more than four times as much. By the same measurement it also shows the lowest overall colour saturation of the group.

So: of these thirteen, this is the one to take if you want the stone to read as white rather than faintly warm. What it is not is a flawless, water-clear stone. Natural colourless topaz usually carries some cast, this one included; it simply carries less of it than its neighbours. We would rather tell you that than let the word "colourless" do more work than it has earned.

An emerald cut, and a quiet one

This is a step cut – a rectangle with trimmed corners, measured and confirmed against a true rectangle rather than guessed from the picture. Its outline fills about 88% of its bounding box, which no oval does.

It also shows the fewest facet edges of the thirteen, which is exactly what a step cut should do: fewer, larger, flatter facets, so the stone gives broad calm flashes instead of the busy sparkle of a brilliant. On a clean, near-colourless stone that is the point. A step cut hides nothing, so it is the cut you choose when the stone can take the scrutiny.

Hardness, and the thing hardness does not cover

Topaz is 8 on the Mohs scale. That is genuinely hard – harder than quartz, so it shrugs off the airborne grit that leaves softer stones looking tired after a year.

But topaz has perfect basal cleavage, a plane along which it can split if struck sharply, and no amount of hardness protects against that. Set it in a bezel or with the corners covered, take it off for rough work, keep it away from ultrasonic cleaners and sudden temperature changes. Warm water, mild soap, a soft brush.

Treatment

Colourless topaz is usually untreated. Blue topaz is irradiated and heated as standard; the colourless material generally is not. That is about the material, not this stone: the treatment of this stone has not been tested and there is no laboratory report.

Ordering

One stone, sold once. Quote GS-WT-0002 when you message us. Message us on WhatsApp for more photographs or a video, and we deliver across Pakistan.

This particular stone

This listing is one natural white topaz with a weight of 5.8 Carat. Its price is Rs. 11,600 — roughly Rs. 2,000 for each carat. Treatment: treatment not tested. Quote reference GS-WT-0002 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.

Between two and six carats is the range most people choose for a gents' ring or a noticeable pendant. Here colour drives the price more than size does, which is why two stones of near-identical weight can be priced very differently.

On the Mohs scale white 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 white 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 white 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): Colourless (white) topaz is normally untreated. 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.