Cut, colour, clarity, carat
Diamonds
A diamond is the most examined object you will ever buy. These guides explain what the grades mean, where the price hides and how to walk into a jeweler knowing more than the sales floor expects.
The guides
Diamonds
How the 4Cs really affect price, whether a lab-grown diamond is right for you, which shape suits which hand and how to read a GIA, IGI or HRD report. The Paliana diamond guides.
Photo: De Beers LondonDe Beers London
De Beers London Vibrations: High Jewelry Shaped by Rivers, Waterfalls and Frost
De Beers London presents Vibrations: four high jewelry suites inspired by inland water, with rough GemFair diamonds, rare pink and green stones and the first cabochon-cut diamonds.
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Cut, colour, clarity, carat
The 4Cs, Explained Without the Sales Talk
What each of the four grades really changes in a diamond, which ones you can see with your own eyes and where the price hides. The 4Cs explained for buyers, not for sales floors.
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Same stone, different market
Lab-Grown or Natural: An Honest Comparison
Lab-grown diamonds are chemically identical to mined ones and cost a fraction. Here is what you gain, what you give up and how to decide with both eyes open.
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Round, oval, cushion and the rest
Diamond Shapes: Which Cut Suits Which Hand
Round, oval, cushion, emerald, pear, marquise, princess, radiant and Asscher: how each shape looks on a hand, what it costs and where it hides flaws or shows them.
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The report, line by line
How to Read a Diamond Certificate (GIA, IGI, HRD)
A diamond report is the only part of the sale that is not an opinion. Here is what every line means, which laboratories the trade trusts and how to check a report is genuine.
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Diamond Price Estimator
Estimate the retail price of a natural or lab-grown diamond from carat, colour, clarity, cut and shape, and see what a buyer would typically offer for it.
The 4Cs, priced
Diamond Price Estimator
Estimate the retail price of a natural or lab-grown diamond from carat, colour, clarity, cut and shape, and see what a buyer would typically offer for it.
OpenUS, UK, EU, Japan
Ring Size Converter
Convert ring sizes between US, UK, EU and Japanese systems from the inside diameter or circumference of a ring, with instructions for measuring at home.
OpenFree valuation
Sell Diamonds and Gemstones
Sell a diamond ring, a loose diamond, a sapphire, ruby or emerald. Describe carat, certificate and setting and receive offers from vetted gemstone buyers.
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