The first thing worth noticing is that "rubellite" is the trade name for red to pink tourmaline, which is the reason this 2.10 carat stone sits in a different price bracket from much of the tourmaline you will see in the bazaar.

It comes from Afghanistan and is priced at Rs. 11,250, about Rs. 5,357 per carat. At 2.1 carats it is a good size for a single-stone ring or a pendant that is meant to be seen.

Tourmaline is sometimes heated or irradiated to adjust colour, and rubellite is no exception. We would rather you asked than guessed, so message us on WhatsApp quoting GS-000438 and we will share what we know of this stone. Independent lab testing can be arranged on request.

On the Mohs scale tourmaline reaches 7 to 7.5, enough for regular wear, though a bezel or a protected setting is wise for a ring. Clean it with lukewarm water and a soft cloth, and avoid sudden temperature changes. You can compare it with similar stones in our tourmaline collection.

Cash on Delivery is available across Pakistan, so you inspect the stone before paying, and returns are accepted within 7 days of delivery. Before you choose, read our tourmaline guide.

This particular stone

This listing is one natural tourmaline with a weight of 2.1 Carat. Its price is Rs. 11,250 — roughly Rs. 5,357 for each carat. Origin: Afghanistan. Treatment: treatment not tested. Quote reference GS-000438 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 tourmaline rates 7 to 7.5. It handles daily wear, but a hard knock can still nick an exposed corner, so a protective setting is a sensible choice. Clean it with warm soapy water and a soft brush, and keep it away from abrasive cleaners and high heat.

Whoever you buy tourmaline 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 tourmaline 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): Tourmaline is sometimes heated or irradiated to adjust colour. 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.