| Expertize and diagnostics at the Russian State Depository for precious metals and gems | |
| ArticleName | Possibility of using instrumental methods for efficiency report of emeralds from Urals and Columbia deposits |
| ArticleAuthor | Ignatyeva T. B., Buzin V. I. |
| ArticleAuthorData | T. B. Ignat'eva, Leading Expert; V. I. Buzin, Chief Expert, phone: (499) 249-88-44, Gokhran of Russia. |
| Abstract | Possibilities of using spectrophotometric and х-ray fluorescence research methods during emeralds separation according to the colour groups have been investigated. The samples from Urals and Columbia have been chosen as the objects for research. Wave length band, typical for different colour lines of emeralds has been defined via spectrophotometric method. The relation of emerald coloration and content of chromophores (Cr, V, Fe) has been established via х-ray fluorescence analysis. The comparison of content of these elements for every deposit has been realized. It has been shown that degree of color saturation has been defined with summary content of described chromophores. Usage of these methods for conditioning, sorting and estimation emerald has been recommended. |
| keywords | Research, instrumental method, efficiency report, emeralds, deposits, Urals, Columbia, spectrophotometric, х-ray fluorescence analysis, chromophores, coloration. |
| References | 1. A. N. Platonov, M. I. Taran, S. V. Balitskiy. Priroda okraski samotsvetov(The Nature of Semiprecious Stones Coloration). Moscow, 1984. 2. N. I. Kornilov, Yu. P. Solodova. Yuvelirnye kamni (Jewelry Stones). Moscow, 1983. 3. M. P. Popov. Uralskie izumrudnye kopi(Ural Emerald Mines). Ekaterinburg, 2004. 4. Kleyshmantas A. Tsvet i khimicheskiy sostav izumrudov khromakvamarinov i ikh zavisimost' ot usloviy obrazovaniya. Color and chemical composition of emeralds and chrome-aquamarines and their dependence on the conditions of formation. Mezhdunarodnaya konferentsiya «Novye idei v naukakh o zemle 2005» (International conference «New Ideas in Earth Sciences 2005») Vol. 2. Moscow, 2005. 5. Kleyshmantas A. Mineralogicheskie i gemmologicheskie osobennosti raznovidnostey berilla : avtoref. dis. d-ra fiz. nauk. The mineralogical and gemological characteristics of the beryl varieties : abstract of a thesis ... Doctor of Physical Sciences. Vilnyus, 2005. |
| Language of full-text | russian |
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