Picture it in a plain silver ring: a bezel leaves the blue facing up and protects the edges, while a four-prong mount lets in more light. At Mohs 9, this 3.90 carat Ceylon neelam is hard enough for either. If you prefer gold, the same stone works well, as the metal tends to warm the blue.

As a pendant it is lighter on the body than a ring and avoids the knocks fingers collect. Nearly four carats gives enough size to be noticed on a chain without looking heavy. If you would like a custom silver setting made, talk to us on WhatsApp and we will go through the options.

The details: a natural blue sapphire from Ceylon (Sri Lanka), 3.90 carats, reference AG-000840. Heating is common in sapphire, so ask us what we know about this stone. Independent lab testing is your choice.

In Vedic astrology neelam is linked with Saturn, and many people consult an astrologer before wearing one.

See similar pieces in the sapphire category, and read our sapphire guide.

Delivery is by insured, tracked courier, and you open the parcel and inspect the stone before paying. Karachi usually 1–2 working days, other cities 2–4, with 7-day returns.

This particular stone

This listing is one natural sapphire, known in Urdu as Neelam, with a weight of 3.9 Carat. Its price is Rs. 16,500 — roughly Rs. 4,231 for each carat. Origin: Ceylon (Sri Lanka). Treatment: treatment not tested. Quote reference AG-000840 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 sapphire 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 sapphire 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 sapphire 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 sapphire on the market is heated to improve colour and clarity; unheated stones exist and cost more. 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.