Labs Define Padparadscha

Members of the Laboratory Manual Harmonization Committee have standardized the nomenclature they use to describe a padparad-scha sapphire. The seven member laboratories will define padparadscha as “a variety of corundum from any geographical origin whose color is a subtle mixture of pinkish orange to orangey pink with pastel tones and low to medium saturations.” LMHC comprises the American Gem Trade Association’s Gemological Testing Center (United States), CISGEM (Italy), GAAJ Laboratory (Japan), GIA Gem Laboratory (United States), GIT Gem Testing Laboratory (Thailand), Gübelin Gem Lab (Switzerland), and SSEF Swiss Gemmological Institute (Switzerland). There are two important items to note: First, stones don’t have to come from Sri Lanka, which is where the name originates; second, the color must be a light to medium pastel tone with light to medium saturation. That excludes t

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