John I. Koivula - Dokumente zum Namen - alle Infos bei Yasni.de

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Russian Emerald Presentation

de.slideshare.net

This is a presentation about a project I worked on from to for a Canadian company that was interested in mining and exploiting the famous emeralds fr…

Insights from inclusions

de.slideshare.net

Insights From Inclusions Author: GIA Submit Submit VIEW GALLERY Natural gemstones are typically far more valuable than synthetics, so being able to i…

Gladwin County, Michigan Dibean Marriage Index Copyright ...

files.usgwarchives.net

... HALLILA MARIA - HALLILA JOHN - KOIVULA 30 JUL HARRIS BERYL - HARRIS WILLIAM JAMES SALTER ...

Koivula, John I [WorldCat Identities]

worldcat.org

Most widely held works by John I Koivula. Photoatlas of inclusions in gemstones by Eduard J Gübelin( Book ) 21 editions published between and in ...

PHOTOATLAS OF INCLUSIONS IN GEMSTONES

pubs.geoscienceworld.org

von GE Harlow · — Eduard Gübelin, a dean of the gemological community (deceased in 2005), and John Koivula, a renowned gemologist. › ...

Microscopic Abstract Art in Gemstones -

seasidemagazine.ca

While studying gemmology, de Goutière was inspired by the photomicrographs of gemmologists Dr. Eduard Gübelin and John Koivula.

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