Here is a number worth pausing on. This 12.90 carat stone costs Rs. 1,669 per carat, while a 37 carat stone in the same collection costs Rs. 602. The smaller stone is nearly three times the rate. In a gem where size carries no scarcity premium, that gap is paid for by quality alone — clarity and colour, nothing else.

The stone

12.90 carats, which is 14.18 ratti. Light blue. Rs. 21,530, about Rs. 1,669 per carat, reference GS-000277. One piece only.

Light blue is what aquamarine is

This is worth saying plainly because so much marketing pretends otherwise. Aquamarine is a pale gem. The colour comes from traces of iron in beryl, present in small quantity, so saturation is gentle by nature. Deeply saturated material exists and is genuinely rare and expensive. Anything sold as a dark, sapphire-like blue at an ordinary price is almost certainly blue topaz, dyed quartz or glass.

A light blue stone, judged on its own terms, has real advantages: it stays visible under indoor light where a dark stone goes flat, it suits every skin tone, and it reads as fresh rather than heavy. The trick is to buy a pale stone that is clean and lively rather than pale and dull — which is exactly what the rate on this one reflects.

How to tell a good pale stone from a weak one

• Brightness, not depth. In a pale gem the cut does the work colour cannot. Look for a bright, busy face rather than a flat one.
• No window. Hold it over printed text. If you can read through the middle, light is escaping out of the back.
• Clean to the eye. At this rate you should expect no visible inclusions. Aquamarine's typical fine tube inclusions are a mark of natural origin, but they should not be obvious.
• A clean blue, not a grey one. The difference between a pale blue and a washed-out grey-blue is immediate when you see them together.

Why not just buy a bigger, cheaper stone?

You can, and for some pieces you should — our larger stones give far more presence per rupee. But a big included stone and a small clean one are different things, and the small clean one is what you want next to a diamond or in anything delicate. Compare them at full size in the aquamarine collection; the photographs are not colour-corrected.

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 reads "treatment not tested" instead of a claim in either direction. Independent laboratory testing can be arranged and a certificate of authenticity comes on request.

Setting a pale stone

Open back, always — light from behind is what makes a light blue glow. White metal keeps it cool and clean; yellow gold warms it towards green. Shape and measurements have not been recorded for this piece, so ask us on WhatsApp at +92 308 887 3888 and we will measure it.

Durability

Beryl is 7.5 to 8 on the Mohs scale — fine for a ring worn regularly, though an edge can chip on a sharp knock. Warm soapy water and a soft brush; no steam or ultrasonic cleaning.

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. Pricing explained in our aquamarine price guide.

This particular stone

This listing is one natural aquamarine, known in Urdu as Beruj, with a weight of 12.9 Carat. Its price is Rs. 21,530 — roughly Rs. 1,669 for each carat. Treatment: treatment not tested. Quote reference GS-000277 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, 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.