Of all the shapes a transparent coloured stone gets cut into, the oval is the most useful compromise. It returns nearly as much light as a round brilliant, it wastes far less of the original crystal, and it covers more of the finger than a round of the same weight. For blue topaz, where the material is affordable and the colour is consistent, that combination is hard to argue with.

The stone

13.35 carats, which is 14.67 ratti. Shape: oval — recorded for this individual stone, not assumed from the category. Recorded colour: blue. Rs. 26,700, Rs. 2,000 per carat, reference GS-00043.

What the oval does for you

• It looks larger than its weight. A longer face means more stone visible at a glance than a round of identical carat.
• It elongates the hand. Set north–south along the finger, an oval visually lengthens it.
• No corners to chip. That matters more than usual here, because topaz has a cleavage plane and sharp corners concentrate stress.
• Mounts are stock everywhere. Oval settings are standard at every jeweller in Pakistan, which keeps setting costs down and makes a future reset easy.
• It keeps weight from the rough. Less waste in cutting, which is part of why topaz stays affordable at this size.

What to check in an oval

Three things, all visible in a straight-down photograph. Symmetry: fold the outline in half in your mind both ways, and both halves should mirror — a lopsided oval forces a custom mount and rarely looks right. A window: hold it over printed text and if you can read through the centre, light is escaping out of the back and the stone will look flat however good the colour is. And a bow-tie: elongated ovals sometimes show a dark band across the middle caused by the pavilion angles, which is a cutting fault rather than a flaw in the material. Ask us on WhatsApp at +92 308 887 3888 for a photograph and a video under moving light and you can check all three before it ships.

The colour

Blue topaz gets its colour from irradiation and heating — standard for the stone and stated on our specification sheet. It starts as colourless topaz; the treatment is permanent and stable. Natural blue topaz exists but is very rare and very pale.

Durability

Topaz is 8 on the Mohs scale, so it resists scratching well. It also has perfect basal cleavage, meaning a sharp knock in the wrong direction can split it. Hardness and toughness are not the same thing. Avoid ultrasonic and steam cleaners entirely; warm soapy water and a soft brush are all it needs. Our topaz care guide covers it.

Measurements

Exact length and width have not been recorded. On an oval the ratio decides how the ring reads on the finger, so ask us to measure it before your jeweller orders a mount.

Ordering

One piece only. 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. See the other sizes in the blue topaz collection.

This particular stone

This listing is one natural blue topaz with a weight of 13.35 Carat. Its price is Rs. 26,700 — roughly Rs. 2,000 for each carat. Treatment: irradiated & heated. Quote reference GS-00043 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 blue topaz rates 8. Few materials will scratch it, so it copes well with everyday ring wear. A soak in warm water with a drop of mild soap and a soft brush keeps it bright; skip the ultrasonic cleaner if inclusions reach the surface.

Whoever you buy blue topaz 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 blue topaz 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: Irradiated & heated. Certificate available on request. As general background (not a statement about this stone): Blue topaz gets its blue colour from irradiation and heating — this is standard for the stone and the colour is stable. 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.