Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.
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All eyes are on the upcoming jewellery sales events in the US – the Luxury and JCK shows in Las Vegas – as business slows down in other parts of the world.
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DeBeers responds to fluctuations, and the FTC issues warnings on laboratory-grown diamonds. Plus: 302.37 ct Graff Lesedi La Rona is revealed.
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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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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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You’ve heard about the 4Cs of diamond quality (colour, clarity, cut and carat weight). But how did they become so well-known? Here’s a little diamond history.
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Shane McClure discussed the unique finds he has seen during his time at GIA at the AGS Conclave in San Diego.
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A new microlithography process developed to create high-resolution diffraction grating patterns on portions of certain facets can improve the dispersion of light and thus the amount of “fire” in a diamond.
Read MoreThe 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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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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