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The Coloured Gemstone & Pearl Report :- In addition to diamond certification we can also arrange through AnchorCert the following :- * Identification of natural gems and synthetic and imitation stones. * Identification of heat treatment and glassy residues in heated rubies and sapphires. * Identification of fissure filling in emeralds. * Determination of 'country of origin' of emeralds, rubies and sapphires. * Unique Tanzanite grading system As one of the major testers of natural pearls in Europe, the AnchorCert Gemmological Office is able to identify: * Natural Pearls. * Nucleated cultured pearls (eg. Akoya', South sea and Tahiti) * Noninucleated cultured pearls (ie. 'Freshwater') * Imitation pearls |