Big amethyst does not have to be costly, and this 12.1 carat laser cut stone is one of the most gently priced pieces in this group. Before you buy, run through these points.

• Size: 12.1 carats is large, enough for a statement ring or a full pendant.
• Colour: purple. When it arrives, tilt it in daylight and look for an even tone through the stone.
• Cut: laser cut; run a fingertip around the edge to feel for chips.
• Hardness: 7 on the Mohs scale, sturdy enough for a ring worn with sensible care.
• Heat: some amethyst is warmed to lighten it; ask us what we know about this one.
• Reference: AG-000236.

With a rate this gentle, the fair comparison is against other large amethysts. Put this one next to a few others and choose the purple you like best, because depth and evenness of tone are what separate a good piece from an ordinary one. A stone over twelve carats also gives a jeweller room to work, whether you want a pendant or a wide ring.

It travels by insured, tracked courier, and delivery is a flat Rs. 500 per order. Compare it with the rest of the amethyst collection and read the care guide.

Pay the rider only after you have checked the stone; Karachi orders usually come in 1–2 working days, others in 2–4, and there are 7 days for returns.

This particular stone

This listing is one natural amethyst, known in Urdu as Jamunia, with a weight of 12.1 Carat. Its price is Rs. 16,500 — roughly Rs. 1,364 for each carat. Treatment: treatment not tested. Quote reference AG-000236 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, 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): 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.