Topaz rates 8 on the Mohs scale, comfortably above quartz and far above glass, so a ring stone like this one gets through normal wear without clouding over with scratches. What it cannot take is a hard blow to a corner, because topaz has a cleavage plane along which it can split.

For this 7.90 carat white topaz, that means thinking about the setting before you buy. A pendant carries very little risk. A ring is fine if metal covers the edges, and less wise if you work with your hands.

The stone is natural, colourless topaz, which is normally not treated. Message us on WhatsApp quoting AG-WH-0007 and we will tell you what we know about this exact piece; independent lab testing is your choice.

Cleaning and storage

Warm water, a little mild soap and a soft toothbrush are enough. Rinse, dry with a lint-free cloth, and keep the stone in its own pouch so harder gems like sapphire cannot scratch it. Our white topaz care guide covers more, and other weights are under white topaz.

Open the box, check the stone, pay the rider: that is the whole process. Karachi deliveries usually take 1 to 2 working days, the rest of Pakistan 2 to 4, and unused stones can be returned within 7 days.

This particular stone

This listing is one natural white topaz with a weight of 7.9 Carat. Its price is Rs. 7,130 — roughly Rs. 903 for each carat. Treatment: treatment not tested. Quote reference AG-WH-0007 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 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, 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): 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.