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GemStore team — written by the people who list and pack every stone.
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Blue topaz is one of the few gemstones where a buyer in Pakistan can get a clean, bright, well-cut stone of good size without stretching the budget. That is because most of it is colourless topaz that has been treated to turn blue, a routine and stable process, and the rough is plentiful. It also means the price differences between stones come from a different set of factors than they do for sapphire or ruby.
This guide shows GemStore's live price table for blue topaz and explains what moves the price, how per-carat and per-ratti quotes relate, how to compare two sellers, and where to look by budget.
Blue topaz prices at GemStore
The table is built from our own blue topaz listings and refreshed every month. It gives the lowest, typical and highest price per stone and the matching figures per carat and per ratti.
| Weight | Weights | Stones | Per carat | Per ratti |
|---|---|---|---|---|
| 6 – 10 carat | 8.9 – 9.8 ct | 5 | Rs 900 – Rs 1,500 | Rs 800 – Rs 1,350 |
| Over 10 carat | 10.0 – 19.1 ct | 9 | Rs 900 – Rs 1,500 | Rs 800 – Rs 1,350 |
Because blue topaz is priced fairly evenly by weight, the per-carat column is the best quick comparison. The monthly gemstone price guide puts it alongside other stones if you are still deciding which gem to buy.
Why blue topaz is affordable
Natural blue topaz exists, but strongly coloured natural stones are rare. Almost all blue topaz in the market starts as colourless or pale topaz that is irradiated and then heated to produce a stable blue. The treatment is standard across the trade, the colour does not fade in normal wear, and reputable suppliers hold treated stones until they are safe to sell. We covered why this is normal in why blue topaz is treated, and who wears it.
The practical result is that the supply of good-looking blue topaz is large. Prices are steady, and the jumps between quality grades are small compared with rarer stones. A fair price reflects the quality of the cutting and the depth of colour more than rarity.
What moves the price
Shade of blue
The trade sorts blue topaz into three broad shades. Sky blue is the lightest. Swiss blue is a bright, clear medium blue. London blue is a deep, slightly greyish or inky blue. The deeper shades take longer to produce, so London blue usually costs more per carat than Swiss, and Swiss more than sky. Within each shade, an even colour without patches or grey zones is worth more.
Price follows shade, but taste should decide. Sky blue reads fresh and light in silver; London blue looks rich in gold and suits larger stones. Both are good choices. In the birthstone lists, blue topaz is often chosen as a December alternative and topaz in general is linked with November, which makes it a common birthday gift, though the link does not change the value of any one stone.
Clarity
Blue topaz is normally eye-clean, meaning you see no inclusions without a loupe. Because clean material is common, buyers expect it, and a visible inclusion lowers the price more than it would on an emerald or a ruby. Look for stones with no cloudy areas, feathers or cracks visible face up.
Cut quality
This is where blue topaz prices really separate. A well-cut stone returns light from the whole face and looks lively. A poorly cut stone has a "window", a washed-out area in the centre where you can see straight through, or dark areas where light leaks out of the base. Good cutting costs time and loses weight from the rough, so precision-cut stones cost more per carat. In photos, look for a stone that sparkles evenly across the face.
Size
Blue topaz forms in large crystals, so big stones are easy to find. The price per carat rises only gently with size, which is why blue topaz is popular for statement rings and pendants. That said, very large stones with deep, even London blue and fine cutting are less common and are priced higher per carat.
Treatment disclosure
Every blue topaz should be listed as treated unless the seller has evidence otherwise. A rare natural-colour blue topaz may carry a premium, but only with proof. If someone quotes a high price because a stone is "natural blue", ask for testing.
Shape
Ovals, cushions and rounds are the most common shapes. Fancy shapes and custom cuts with many facets cost more for the work involved. A shape that fits standard ring mounts is easier and cheaper to set.
Per carat, per ratti and how to convert
Pakistani gem shops often quote blue topaz per ratti. The standard gemstone ratti is 0.91 carat (about 0.182 g). Some jewellers use the smaller sunari ratti of about 0.1215 g, roughly 0.61 carat, and a quote on that scale sounds cheaper per ratti for the same stone. Always confirm which ratti is meant.
- Price per carat = total price ÷ carat weight
- Price per standard ratti = price per carat × 0.91
- Weight in standard ratti = carats ÷ 0.91
For example, a 10.00 carat blue topaz weighs about 11 standard ratti, and a 12.45 carat stone about 13.7 ratti. The carat to ratti converter does it for any weight.
How to compare two blue topaz quotes
- Convert to price per carat, confirming the ratti used.
- Match the shade. A London blue and a sky blue are not the same product, even at the same weight.
- Compare the cutting. Ask for a video turning the stone. Look for windows and dead areas.
- Check it is topaz. Blue glass and synthetic spinel are cheaper look-alikes, and aquamarine is a different, usually costlier stone. A listing should name the mineral.
- Loose weight only. Weights taken in a ring include metal.
- Inspection and returns. The right to look before paying and to return within a set period is worth something.
If one price is far below the rest, the usual reasons are glass, a different ratti, or a poorly cut stone that looks fine only in one photo. Our guide to checking a gemstone before you buy covers the basics.
Blue topaz or aquamarine?
People often compare these two because both are blue and both can be found in large sizes. Aquamarine (Beruj) has a softer, slightly greenish or sea blue, is often untreated or only gently heated, and generally costs more per carat for good colour. Blue topaz offers a brighter, more saturated blue at a lower price. Topaz is also slightly harder. If you are torn, look at the aquamarine category and our aquamarine price guide side by side. Pakistan's own mountains are known for aquamarine; see Skardu aquamarine.
Budget tiers using the filters
The shop's price filters are a quick way to shortlist. They show price bands, not quality grades.
- Under 5,000 rupees: smaller stones and lighter shades. A sensible place to start for a first ring.
- 5,000 to 20,000 rupees: larger ring stones, deeper Swiss and London shades, better cutting.
- 20,000 to 50,000 rupees: big stones, fine London blue or precision cutting.
- Over 50,000 rupees: unusual size or claimed natural colour, where testing is advisable.
Two stones from our current listings show the step in size: a 10.00 carat blue topaz and a 12.45 carat blue topaz. Compare their per-carat prices and their shade. All our stones are in the blue topaz category, and other topaz colours are under topaz and white topaz.
The ring is a separate cost
Many blue topaz quotes in Pakistani markets are for a finished ring, which bundles three costs: the stone, the metal by weight, and the making and setting charge. Silver and gold prices move independently of gem prices, so a ring quote can change even when the stone's value has not. Ask for the stone price on its own, then compare the ring work separately. A large blue topaz also needs a mount strong enough to protect its edges, which may use more metal than a small stone. Our planned guides to silver rings with stones and the stone setting service explain what goes into the setting, and silver vs gold settings helps with the choice of metal. Choosing the stone first and the ring second usually gives a better result for the same total budget.
Keeping value after you buy
Topaz is hard, about 8 on the Mohs scale, but it has a cleavage plane and can split if it takes a sharp knock in the wrong direction. A setting that protects the edges keeps the stone, and its value, intact. Avoid steam cleaning and sudden temperature changes. Our topaz care guide explains why. For a full overview of topaz pricing, see our planned topaz price guide.
Buying blue topaz from GemStore
We list each blue topaz on its own with its own photos and loose weight, and we state that the colour is treated. A certificate is available on request, and independent testing can be arranged. Orders are dispatched within one to two working days from Lahore by insured, tracked courier and reach any city in Pakistan in about seven working days. Pay by Cash on Delivery once you have opened the parcel and checked the stone, and return it within 7 days if it is not right. Ask us anything on WhatsApp at +92 308 887 3888.
Shop the stones: blue topaz.
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