With aquamarine, a careful buyer asks about treatment first. Heating to remove green tones is the usual enhancement and is accepted in the trade. What matters is that you are told about it, and that you can ask questions before you pay.

For this 15.95 carat natural aquamarine, we will tell you what we know on WhatsApp. Quote AG-000267 and we will answer plainly. An independent lab test is your option if you want one.

What it is

Called beruj in Urdu, this is a sea-blue stone of real size. Large aquamarines usually carry a lower rate per carat than small ones, which is why a stone of this weight stays within reach. It rates 7.5 to 8 on the Mohs scale, so it can go into a ring or a pendant.

Compare it with others in the aquamarine category before you decide.

It travels Cash on Delivery, so you check it at the door before paying; Karachi in about 1–2 working days, other cities 2–4, and returns open for 7 days. Read our aquamarine guide.

This particular stone

This listing is one natural aquamarine, known in Urdu as Beruj, with a weight of 15.95 Carat. Its price is Rs. 6,530 — roughly Rs. 409 for each carat. Treatment: treatment not tested. Quote reference AG-000267 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 aquamarine rates 7.5 to 8. 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 aquamarine 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 aquamarine 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): Aquamarine is commonly heated to remove green tones and leave a purer blue. 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.