Titlebook: HPHT-Treated Diamonds; Diamonds Forever Inga A. Dobrinets,Victor. G. Vins,Alexander M. Zai Book 2013 Springer-Verlag Berlin Heidelberg 2013

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Martina Barcelloni Corte,Paola Viganò. In this chapter, we summarize the data on all the optical centers throughout the UV-Vis-IR spectral range, which undergo changes during HPHT treatment and which are used for recognition of treatment. Characteristic combinations of optical centers observed in spectra of HPHT-treated diamonds are di

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https://doi.org/10.1007/978-3-319-75975-3diamonds and as methods of recognition of HPHT-treated diamonds. Since all natural diamonds fluoresce under UV excitation, the visual luminescence technique is a common method applicable to diamonds of all types. The change of luminescence color after HPHT treatment and the formation of characterist

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Diamonds Used for HPHT Treatment,. Low clarity diamonds with many inclusions may considerably stimulate internal graphitization and development of cracks during HPHT annealing making HPHT treatment useless. Diamond type is a technological rather than commercial parameter of diamond. It is a key factor for determination the HPHT tre

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HPHT-Induced Transformations,f the processes of nitrogen defect aggregation and dissociation is given. Stimulating action of vacancies and nickel in the nitrogen-defect transformation processes is discussed. It is shown that the understanding of the nitrogen defect transformation processes is a key to recognition of HPHT-treate

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