Dark stones usually hide their best feature, but black cat's eye is the exception. Against a near-black charcoal body, the pale band of this 5.70 carat lehsunia stands out like a thin line of light drawn across slate.

Its rate per carat is higher than the green lehsunia we list, and the reason is simple in this family: a dark, even body with a crisp band is harder to find than a mid-tone green, so buyers pay more for it.

Hold the stone beside a window and turn it slowly. The band should narrow and widen smoothly with the light.

It is natural cat's eye chrysoberyl, 8.5 on the Mohs scale, tough enough for a ring worn every day. At 5.70 carats it sits neatly in a standard gents' ring without a heavy shank.

Lehsunia is generally not enhanced, but we prefer to tell you what we know of each piece. Message us on WhatsApp quoting AG-CE-0010; independent lab testing is your choice.

The rest of the cat eye range includes green shades if you want to compare.

Clean it with warm water and a soft cloth, and give it its own pouch.

Look before you pay: open the parcel with the rider present. Karachi usually receives orders in 1 to 2 working days and the rest of Pakistan in 2 to 4, with 7 days to return it unused. Before you choose, read our cat eye guide.

This particular stone

This listing is one natural cat eye, known in Urdu as Lehsunia, with a weight of 5.7 Carat. Its price is Rs. 4,280 — roughly Rs. 751 for each carat. Treatment: treatment not tested. Quote reference AG-CE-0010 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 cat eye rates 8.5. 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 cat eye 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 cat eye 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): Cat's eye chrysoberyl (lehsunia) is usually 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.