Some stones announce themselves quietly: this 13.75 carat red agate is one of them. The colour is the first thing you notice, and the weight tells you it has been chosen for a decent-sized ring.

It is a natural Surkh Aqeeq, sold as a single stone, at Rs. 1,880. That makes about Rs. 137 per carat, a little lower than many red agates of similar weight in our listings, though not in a way that says anything about quality.

The colour of red agate in general is often brought up by heating or dyeing. We will gladly say what we know of this specific stone; message +92 308 887 3888 with the code GS-RE-0011.

Take it out of the parcel in daylight when it arrives, and turn it slowly. Look for an even tone and a clean polish. Cash on Delivery allows inspection before you pay, so you can do this with the courier standing there. A bigger selection waits in the red agate collection.

Heavier stones like this one tend to suit square or broad bezel mounts, which protect the corners. If a custom silver ring setting interests you, raise it with us on WhatsApp and we will discuss what is possible. Returns are accepted within seven days of delivery.

Before you choose, read our red agate guide.

This particular stone

This listing is one natural red agate with a weight of 13.75 Carat. Its price is Rs. 1,880 — roughly Rs. 137 for each carat. Treatment: treatment not tested. Quote reference GS-RE-0011 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.

Above twelve carats you are into collector territory. Pieces this heavy are usually set as pendants or kept loose, and they are prized for the size of rough they came from. If you do set it, choose a bezel or a heavy claw to protect the edges.

On the Mohs scale red agate rates 6.5 to 7. That is middle-of-the-road hardness: comfortable in pendants and earrings, and in rings worn with some care. Store it apart from harder stones so it does not pick up scratches, and wipe it with a damp cloth rather than scrubbing.

Whoever you buy red agate 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 red agate 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): Red agate is often heated or dyed to deepen its 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.