Titlebook: Gems and Gemmology; An Introduction for Stefanos Karampelas,Lore Kiefert,Peter Vandenabeel Book 2020 Springer Nature Switzerland AG 2020 I

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2946-465X professionals who want to refresh their knowledge of the topic. This work is part of a series of introductory texts that deal with a broad range of materials-related topics in archaeometry..978-3-030-35451-0978-3-030-35449-7Series ISSN 2946-465X Series E-ISSN 2946-4668

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Introduction,dered a geoscience and a branch of mineralogy. Its roots can be traced back to Theophrastus (315 BCE) who described how minerals and gems grow and to Pliny (79 CE) who mentioned identification issues of gems. At the beginning of the nineteenth century R-J Haüy and his contemporaries started to devel

absorbed

Gems Through the Ages, rough form, or polished with curved surfaces or engraved. Simple forms of faceting appeared around the start of thirteenth century and it radically improved after the industrial revolution. During different periods in time, different cultures were considering different materials as gems. A problem

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极微小

Gem Treatments, Synthetics and Imitations, at the time, but also about the various types of treatments, imitations and synthetic gems. Treatments involve all processes used to modify the appearance of gem materials in order to make the more attractive and desirable. Some treatments go back to Minoan times. Imitations are materials looking s

intimate

语源学

MOT

des the theoretical and methodological foundations for furthThis handbook provides an authoritative and truly comprehensive overview both of the diverse applications of information and communication technologies (ICTs) within the travel and tourism industry and of e-tourism as a field of scientific