Measuring parameters of a cut gemstone

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United States of America Patent

PATENT NO 9958398
SERIAL NO

14905318

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Abstract

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Apparatus and corresponding methods for measuring a plurality of parameters of a cut gemstone while it is positioned at a single measurement location. Apparatus comprise a plurality of light sources, each configured to emit light at a different one of a plurality of emission wavelengths or ranges of wavelengths such that the emitted light illuminates at least part of the measurement location. Apparatus further comprise a sensor assembly configured to sense light at a plurality of sensing wavelengths or ranges of wavelengths for measuring the plurality of parameters. The sensed light is received at the sensor assembly from the measurement location as a result of illumination of a cut gemstone located at the measurement location.

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Patent Owner(s)

Patent OwnerAddress
DE BEERS UK LTD20 CARLTON HOUSE TERRACE LONDON SW1Y 5AN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
D'Gama, Siobhan London, GB 4 73
Davies, Nicholas Matthew Berkshire, GB 5 28
Rose, Peter Stanley Buckinghamshire, GB 7 58
Willis, Maxwell Ralph Oxfordshire, GB 2 8

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