The round brilliant is the most calculated shape in gem cutting: its angles were worked out mathematically to send as much light as possible back through the top of the stone. In a pale gem that is not a luxury, it is the main event. Where colour is gentle, brilliance is what makes the stone look alive instead of watery.

The stone

8.75 carats, which is 9.62 ratti. Round brilliant cut. Rs. 15,000, about Rs. 1,714 per carat, reference GS-000273. One piece only.

What a round cut gives a pale stone

• Maximum return of light. More sparkle per carat than any other standard shape, which compensates for gentle colour.
• No weak points. No corners to chip — useful for beryl, which can chip on a sharp edge. Claws and bezels are both straightforward.
• Standard mounts everywhere. Round settings are stock at every jeweller in Pakistan, so setting costs stay low and a future reset is easy.
• Symmetry you can check yourself. Rotate it slowly: the outline should not wobble and the facets should line up in clean rings. A lopsided round is obvious in a way a lopsided freeform is not.

The trade-off worth knowing

A round brilliant keeps less of the original rough than an oval or an emerald cut, so cutters lose more weight making one, and that loss is paid for in the price. At about Rs. 1,714 per carat this is among the higher rates in our aquamarine range — you are buying the shape and the clarity as much as the material. If raw size per rupee is the goal, the larger stones in the aquamarine collection give far more presence for the money.

How do I check the cut?

Hold it over a line of printed text and look straight down. If you can read the words through the middle of the table, there is a window — light is escaping through the back instead of returning to your eye, and the stone will look flat however clean it is. A well-cut round shows a bright, busy centre. Ask us on WhatsApp at +92 308 887 3888 for a video under moving light and you can judge it before it ships.

Setting it

Open back, so light enters from behind and lifts the blue. White metal keeps the colour cool and clean. The diameter has not been recorded for this piece; we will measure it on request so your jeweller can order the right mount.

Treatment

Aquamarine is commonly heated to remove green tones and leave a purer blue — standard, permanent, accepted. We have not tested this stone, so the specification says so rather than claiming it is unheated. A certificate of authenticity is available on request and independent laboratory testing can be arranged.

Durability

Beryl is 7.5 to 8 on the Mohs scale — fine for a ring worn regularly. Warm soapy water and a soft brush; avoid steam and ultrasonic cleaners.

Ordering

Flat Rs. 500 delivery anywhere in Pakistan, insured and tracked, dispatched in one to two working days. Cash on Delivery, seven days to return it unused.

This particular stone

This listing is one natural aquamarine, known in Urdu as Beruj, with a weight of 8.75 Carat. Its price is Rs. 15,000 — roughly Rs. 1,714 for each carat. Treatment: treatment not tested. Quote reference GS-000273 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.

From six carats up a stone becomes the centre of attention. It wants a broader shank or a secure claw setting and suits an occasion ring, a signet or a centre pendant. Clean natural material of this size turns up far less often, and the per-carat rate reflects that.

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, 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): 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.