Gem Identification BlueChart | Home | Features | Order | Educational links & general information | Contact | Diamond? Irradiated? HPHT treated? Synthetic? Ruby? Glass filled ? Diffused? Synthetic?   Gemstone Identification  Blue Chart Edition 2023 Emerald? Fracture filled? Triplet? Synthetic? Sapphire? Heat treated ? Diffused? Synthetic?          A compilation of key information for the gemologist:            - to analyze the results obtained with the standard gemological tools            - to distinguish between natural and treated gemstones, synthesis and imitations            - to avoid traps and potentially misleading results                    Overview                  Order now             "... Highly recommended for gemmologists ..."         GEM-A / Gems & Jewellery winter 2019           "... Blue Chart's new incredibly comprehensive and detailed gem ID chart ..."         Instore Magazine november 2002     Amber?   Amber or copal? Clarity improved ? Reconstructed? Gems, Minerals, & Fossils WebRing by s_r_a_inc [ Join Now | Ring Hub | Random | << Prev | Next >> ] - Turquoise?   Impregnated? Reconstructed ? Ceramic?