Tag Archives: Swiss Gemmological Institute

Pearl trade routes could be revealed with DNA

June 8, 2020

Identifying and documenting the origin of notable pearls is central to a new service from the Swiss Gemmological Institute (SSEF).

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Swiss labs harmonize ruby and sapphire colour standards

November 16, 2015

Swiss-based GÃ¼belin Gem Lab and Swiss Gemmological Institute (SSEF) are harmonizing their standards for the colour terms ‘pigeon blood red’ and ‘royal blue.’

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Pearl DNA extracted to determine origin

October 21, 2013

Researchers at the Swiss Gemmological Institute (SSEF) have recovered DNA from pearls they say allows them to determine origin.

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SSEF warns of synthetic red spinel

November 17, 2008

A resurgence in the demand for fine-quality red spinels may be the catalyst for the recent appearance of flux synthetics, says the SSEF Swiss Gemmological Institute.

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