Twelve and a half carats would make most gems expensive, yet 12.9 carats of amethyst remains within reach, because amethyst is a stone for size. This one is a large piece, well above the middle of what we list, and it should be worn with that in mind.

A stone this big looks best in a statement ring or a substantial pendant. On a ring, the weight sits high above the finger, so choose a low, closed setting and keep it away from tight spaces. Pendants carry the weight easily. The laser cut gives bright faces, and the colour is purple.

It is priced at Rs. 30,750, or about Rs. 2,384 per carat, and the reference is GS-000230. When you look at any large amethyst, check the colour is even through the stone and that no chips mark the edge. Most amethyst is sold as found, though a few stones are warmed to lighten them; ask us on WhatsApp what we know about this one.

Mohs 7 is enough for normal use. Keep it from long exposure to hot sun. More sizes are under amethyst, and the care guide covers cleaning.

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

This particular stone

This listing is one natural amethyst, known in Urdu as Jamunia, with a weight of 12.9 Carat. Its price is Rs. 30,750 — roughly Rs. 2,384 for each carat. Treatment: treatment not tested. Quote reference GS-000230 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 amethyst rates 7. 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 amethyst 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 amethyst 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): Amethyst is usually untreated, though some stones are heated to lighten the 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.