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Gemmological Classifiactions (by E. Ya. Kievlenko, 1980, updated) based on books:
- Kievlenko, Eugenii Ya. (2003). "General data on gems". In Soregaroli, Dr. Art (ed.). Geology of gems. Ministry of Natural Resources and Environment (Russia). Moscow, Russia: Assoc. Ecost. p. 19. ISBN 5-900395-25-1. — Niklitov ( talk) 20:57, 7 July 2016 (UTC)
Template:Gemstone or Template:Gemstones or Template:Gems? — Niklitov ( talk) 20:57, 7 July 2016 (UTC)
| This template does not require a rating on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
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Gemmological Classifiactions (by E. Ya. Kievlenko, 1980, updated) based on books:
- Kievlenko, Eugenii Ya. (2003). "General data on gems". In Soregaroli, Dr. Art (ed.). Geology of gems. Ministry of Natural Resources and Environment (Russia). Moscow, Russia: Assoc. Ecost. p. 19. ISBN 5-900395-25-1. — Niklitov ( talk) 20:57, 7 July 2016 (UTC)
Template:Gemstone or Template:Gemstones or Template:Gems? — Niklitov ( talk) 20:57, 7 July 2016 (UTC)