Gem Notes
Learn the stone before you buy it
Straight answers on identifying, pricing, choosing and caring for natural gemstones — written for buyers in Pakistan, with the Urdu names you already know.
Cleaning, storing and wearing a softer stone sensibly How to Care for Moonstone and Keep Its Glow
Moonstone is a feldspar, and two things about feldspar decide how you should look after it. It is only 6 to 6.5 on the Mohs scale, and it ha…
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The small details that separate a fine stone from an ordinary one How to Judge Chalcedony: Glow, Even Colour and a Waxy Shine
Chalcedony is the general name for microcrystalline quartz, a family that also takes in agate, carnelian, onyx and bloodstone. When a dealer…
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What separates a good shajri aqeeq from an ordinary one How to Judge Moss Agate: Pattern, Clarity and Cut
In Pakistan we call moss agate shajri aqeeq. It is translucent chalcedony carrying mineral growths that look like moss, ferns or little tree…
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Looking at a ruby the way the trade does How Yaqoot Is Graded: Colour, Glow, Silk and Treatment
Two yaqoot of the same weight can be miles apart in value, and what separates them is something you can learn to see. Dealers don't grade ru…
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What to check on a dur-e-najaf before you pay for it Is Your Dur-e-Najaf Genuine? Telling Rock Crystal from Glass and Zircon
Dur-e-najaf is natural colourless quartz, which gemmologists call rock crystal. Through its link with Najaf it holds deep religious and cult…
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Simple checks that separate genuine amber from young resin and moulded fakes Is Your Kehruba Real? Five Ways to Tell Amber from Copal and Plastic
Amber is not a mineral. It is tree resin that has slowly hardened over millions of years, and that long history is exactly what its imitatio…
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Checking kunzite one clue at a time Is Your Kunzite Real? Colour Shift, Weight and Other Telltale Signs
Kunzite is the pink-to-lilac form of the mineral spodumene, and some very fine crystals come from Afghanistan and the mountains of northern…
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How variety, pattern and finish set the value of a jasper Jasper Costs Little, So What Decides Its Price?
Jasper is among the cheapest natural stones on the market, and people often take that to mean one jasper is as good as another. Not so. Jasp…
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How turquoise is graded in practice Judging Feroza: Colour, Matrix and Stabilisation Explained
Feroza is graded on features you can see without any tools, which makes it one of the easier gems for a buyer to judge once you know what ea…
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How lapis lazuli quality is read Judging Lajward: Blue Depth, Gold Pyrite and White Calcite
Lajward, or lapis lazuli, is not one mineral but a rock. It is mostly blue lazurite, mixed with white calcite, golden pyrite and sometimes a…
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Bands, contrast and polish, explained in a minute Judging Sulemani Aqeeq: What Makes One Stone Fine and Another Ordinary
Sulemani aqeeq is banded agate, usually black or dark brown with sharp white lines running through it, and sometimes with rings that look li…
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Simple habits that protect a heliotrope's polish Looking After Bloodstone So the Green Stays Deep and the Red Stays Sharp
Bloodstone, known in the books as heliotrope, is dark green chalcedony with red flecks of iron oxide running through it. It is a tough littl…
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Easy habits for a stone that forgives most mistakes Looking After Green Agate: Cleaning, Dyed Colour and Everyday Care
Green aqeeq is a hard, easy-going stone, and looking after it is mostly common sense. The one thing you do need to understand is where the g…
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