A diamond examined in the Carlsbad lab shows chameleon colouring in an unusual pattern.
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A cape diamond examined in the New York lab shows rare yellow phosphorescence.
Read MoreNumerous natural-colour coloured diamonds from the Aurora Butterfly of Peace and other collections were studied using a new type of fluorescence spectrometer.
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DiamondView is used to differentiate a Fancy black natural diamond from its NPD synthetic counterparts.
Read MoreFancy colour diamonds come in almost any colour you can imagine. Red, green, purple and orange are generally the rarest, followed by pink and blue. Yellows and browns are the most common fancy colours, but they’re generally less valuable than the rarer colours.
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An iridescent inclusion may reveal a diamond’s subsurface origin.
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Inclusions with unusual formation are found in a treated Fancy Vivid yellow diamond.
Read MoreThe author reports on a sudden influx of natural fancy pink diamonds and their origins.
Read MoreHigh-quality synthetic diamonds created by the Gemesis Corp. are examined and their gemmological properties are explicated.
Read MoreOne of the most popular exhibits at the Smithsonian Institution, the stunning Fancy Dark greyish blue Hope diamond was formally graded by GIA’s gem laboratory.
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