Premium IGI has equipped ourselves with state of the art equipments available for the use in the identification and authentication of colored gemstones. Each Premium IGI Coloured Gemstone Certificate clearly states whether the stone is natural or synthetic. The certificate identifies the variety of the gemstone, its shape, carat weight, cut, colour quality, measurements, transparency factor and major optical characteristics. If the stone has undergone any treatment, this information will be listed on the certificate as well.
