Hold this ruby in sunlight when it arrives. A good ruby reveals itself in daylight, where uneven colour or surface marks are easier to see than under a showroom spot. This one is 5.95 carats, red, and listed from Kashmir, a name that carries weight in ruby circles.

At 9 on the Mohs scale it is as practical as it is attractive. Just under six carats, it makes a handsome ring in silver or gold and holds its own as a pendant.

A word on honesty. Heat is routine for ruby, and the cheap end of the market sometimes uses glass fillers. No glass-filled ruby is ever offered here as natural, and we will gladly share what we know about this one if you quote AG-000518. If you want a paper trail, independent lab testing is your option.

Other sizes are in the ruby category, and our authenticity page explains in practice how we describe stones and how lab reports work.

Pay the rider only after you have opened the parcel and checked the stone. We deliver across Karachi in 1–2 working days and to other cities in 2–4, and unused stones can be returned within 7 days. Our ruby guide is worth reading.

This particular stone

This listing is one natural ruby, known in Urdu as Yaqoot, with a weight of 5.95 Carat. Its price is Rs. 14,250 — roughly Rs. 2,395 for each carat. Origin: Kashmir. Treatment: treatment not tested. Quote reference AG-000518 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 ruby rates 9. 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 ruby 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 ruby 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): Most ruby (yaqoot) is heated, and lower grades may be glass-filled; we do not sell glass-filled ruby as natural ruby. 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.