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Al Dunlap is an original: an outspoken, irascible executive with an incredible track record of injecting new life into tired companies. The business media have coined a new verb--"to dunlap"--when describing a fast company turnaround.
Gemmology is a text for students preparing for the Gemmological Association's Preliminary and Diploma examinations. The book is more expansive and up-to-date than the author's earlier book, Beginner's Guide to Gemmology. The book deals with the practical and theoretical sides of gemmology. Tracing the background and science of gemmology, the book covers the gem material, geological formation, and occurrence of gemstones on the earth. The composition of gemstones from the atoms, elements, molecules, and compounds comprising them is analyzed, and the relationship between chemical composition and durability of the stone is explained. The basics of crystallography is mentioned as a tool toward u...
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This volume brings together recent work on the formal and interpretational properties of determiners across a variety of typologically and geographically unrelated languages. It seeks to answer the core question of modern linguistic theory: Which properties of languages are universal and which are variable? In recent theorizing, much of language variation is argued to stem from differences in the properties of features associated with functional heads. As such, this volume can be viewed as a case study of one such category: the determiner (D). The contributions all investigate the status of D as a language universal by examining the language-specific syntactic and semantic properties associated with this category. This volume will appeal to researchers and students in syntax and semantics, as well as to those who have more a specific interest in determiners and noun phrases.
This edition has been completely revised to cover the latest methods of gem enhancement and identification, as well as the most up-to-date test instruments and laboratory techniques.
Explains in non-technical terms how to use the dichroscope to identify colored gems, and how to separate natural gems from imitations, treated gemstones, synthetics, and look-alikes. The approach is direct and practical, and its style is easy to understand. With this highly accessible guide booklet, anyone can begin to master gem identification using the dichroscope.