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ZGL Colored Gemstone Certificate

ZGL have equipped ourselves with the most technologically advanced equipment available for the use in the identification and authentication of colored gemstones. ZGL laboratories are equipped with immersion cells, micrometers, spectroscopes, Polari scopes, refractometers, specific gravity liquids, binocular microscopes and spectrophotometers. Each ZGL colored gemstone certificate clearly states whether the stone is natural or synthetic. The certificate identifies the variety of the gemstone, its shape, carat weight, cut, color quality, measurements, transparency factor and major optical characteristics. If the stone had undergone any treatment, this information will be listed on the certificate as well. Upon request, the origin of the gemstone may be determined.ZGL have equipped ourselves with the most technologically advanced equipment available for the use in the identification and authentication of colored gemstones. ZGL laboratories are equipped with immersion cells, micrometers, spectroscopes, Polari scopes, refractometers, specific gravity liquids, binocular microscopes and spectrophotometers. Each ZGL colored gemstone certificate clearly states whether the stone is natural or synthetic. The certificate identifies the variety of the gemstone, its shape, carat weight, cut, color quality, measurements, transparency factor and major optical characteristics. If the stone had undergone any treatment, this information will be listed on the certificate as well. Upon request, the origin of the gemstone may be determined.

Certificate