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A notebook, pen, mobile phone with compass app and a digital camera sit on top of a map.
Article
The Stories Behind the Photos: A Gigantic Aquamarine and ‘Gaudy’ Nature

Gemmological photojournalist Robert Weldon shares the stories behind some of his favourite photos.

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Three light-to-medium blue carved sculptures sit in a line – from larger to smaller.
Article
Making the Cut: The Art and Science of Fantasy Carving

Gem cutters - whether “gem whisperers” or mathematicians - create breathtakingly artistic individual gems and sculptures.

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Close-up shot of 18K yellow gold, emerald, enamel and diamond lariet suite, inclusing ring, lariet, pendant and earrings.
Article
GIA Scholarship Helps Designer Build Technical Skills and Creativity

JDT programme gives designer the skills and techniques – and freedom – to create the designs that move past the trends.

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Article
Diamond Cut: The Wow Factor

Learn the basics of the GIA Cut Grading System for round brilliant cut diamonds to help pick out your perfect diamond.

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Lattice-patterned gems encase an 18K gold kaleidoscope.
Article
Katzenbach Designs Honoured with Two AGTA Awards in Two Years

Designer specialises in Maine tourmaline, precision faceting, fantasy-cut gemstones and custom-designed jewellery.

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Different views show the color zoning in this emerald.
Colour-Zoned Emerald

An emerald with strong colour zoning along the pavilion facets demonstrates the importance of cutting and orientation in gem materials.

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Article
Describing 58-facet Round Brilliant-Cut Diamonds at GIA

Many beautiful older diamonds are cut to different proportions than modern round brilliants, which makes them a challenge to grade according to modern cut conventions. This article describes how the GIA accommodates these historic gems.

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Article
Is Another 1,000 (or 3,000) Carat Diamond Around the Corner?

Find out why the number of very large diamonds entering the market has increased sharply in the last few years.

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A Foundation for Grading the Overall Cut Quality of Round Brilliant Cut Diamonds

The GIA diamond cut grading system described here includes the components of brightness, fire, scintillation, polish and symmetry, as well as weight and durability concerns, into a single overall grade for cut quality for standard round brilliants.

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Indian necklace
Article
Jewellers to the Maharajas of Jaipur and Modern-Day Moguls

Enter a world not well-known in the West—the world of the maharajas and their jewellery, coveted by the modern-day moguls of business, entertainment and royalty. See the fantastic works of art made today in the form of enamelled Kundan meena jewellery and the regal look of polki diamonds.

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