The blue glow in a moonstone is not a colour in the usual sense. It comes from light scattering between microscopically thin layers inside the feldspar, which is why the sheen glides around when you tilt the stone and disappears when you turn it the wrong way. This 5.7 carat piece from Ceylon (Sri Lanka) has a milky white body and exactly that bluish adularescence.

It is translucent, with a diffused, soft look rather than the glassy brilliance of sapphire. Hardness is 6 to 6.5 on the Mohs scale, so it expects a calmer life than a harder gem would: a pendant or a protected silver setting makes more sense than a ring worn daily. Keep it away from knocks, ultrasonic cleaners and harsh household chemicals.

Moonstone generally reaches the market without treatment; to hear what we have on file for this particular stone, message us on WhatsApp. Independent lab testing can be arranged too. The price is Rs. 3,750, about Rs. 658 per carat, and the reference to quote is GS-000408.

Many buyers like to hold several moonstones against each other before settling on one, and the moonstone category makes that easy.

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

This particular stone

This listing is one natural moonstone with a weight of 5.7 Carat. Its price is Rs. 3,750 — roughly Rs. 658 for each carat. Origin: Ceylon (Sri Lanka). Treatment: treatment not tested. Quote reference GS-000408 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.

Between two and six carats is the range most people choose for a gents' ring or a noticeable pendant. Here colour drives the price more than size does, which is why two stones of near-identical weight can be priced very differently.

On the Mohs scale moonstone rates 6 to 6.5. That is middle-of-the-road hardness: comfortable in pendants and earrings, and in rings worn with some care. Store it apart from harder stones so it does not pick up scratches, and wipe it with a damp cloth rather than scrubbing.

Whoever you buy moonstone 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 moonstone 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): Moonstone is usually untreated. 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.