Quartz (Butterworths Gem Books)

O'Donoghue, Michael

Science & Math

Butterworth-Heinemann

Producing Video For Teaching and Learning

Producing Video for Teaching and Learning: Planning and Collaboration provides lecturers, researchers, professors, and technical staff in educational settings with a framework for producing video resources for teaching and learning purposes. This highly useful guide brings together the literature from the field into a constructive, developmental framework, prompting users to reflect on their own ideas at each stage of the production process.  O’Donoghue makes clear distinctions between related aspects of video production, and offers working definitions where appropriate in order to address the academic and tertiary support technical audience. Interviews with established professionals in the field illustrate the possibilities―and limitations―of video for teaching and learning.  Producing Video for Teaching and Learning gives readers the power to enhance the learning capacity of their own video materials.

Producing Video For Teaching and Learning: Planning and Collaboration

Politics & Social Sciences

Sociology

Routledge

Has Index and Bibliography with well illustrated with color plates and black &amp; white photos.

A guide to man-made gemstones

Van Nostrand-Reinhold

Identifying Man-Made Gems

Chemistry

Intl Ideas

Artificial Gemstones

Artificial gemstones have been well established in the trade for some time, but with further refinements in their manufacture, gemmologists worldwide are facing increasing problems with identification. In Artificial Gemstones, Michael O'Donoghue provides the definitive guide to the various manmade substitutes, thus enabling anyone handling gems to identify them accurately. Starting with the theory of synthetic gem manufacture and an explanation of the production methods used for growing and/or improving crystals, the book moves on to list and identify the materials themselves. The author lists the internal and external features and tests, and the book contains color illustrations to display the inclusions found in transparent materials. The book is completed by an extensive bibliography and a useful appendix of trade names.

Crafts, Hobbies & Home

Antiques & Collectibles

Robert_Hale

Artificial gemstones have been well established in the jewel trade for some time, but following further refinements in their manufacture, gemologists worldwide are facing increasing problems with their identification. Today, for instance, gem-quality synthetic diamonds—once deemed impossible to produce—are becoming widely available. The synthetic products of the past are still available as well, and often prove puzzling to newer generations of gemologists. Starting with the theory of synthetic gem manufacture and an explanation of the production methods used for growing and improving crystals, this definitive guide to the various manmade gem substitutes goes on to identify all existing artificial substances. The identifying internal and external features and tests are addressed, and color photographs illustrate the tell-tale features of both artificial and naturally occurring substances. Gemologists, gem dealers, curators, amateurs, and students alike will find this an indispensable resource.

The Crowood Press

Since it was published in 1962, Gems has become universally recognized as the most comprehensive and authoritative treatise on gem materials in the English language. Now in its sixth edition, it has been revised for relevance to today’s practice. It includes an expanded encyclopaedic section, and offers a descriptive account of all gem materials used as ornament, along with their synthetic counterparts and the materials used over the centuries to imitate them. Editor Michael O’Donoghue has been assisted by a team of specialists to make this sixth edition of Gems an invaluable gemmological reference work which caters for professional jewelers, student gemmologists, and collectors of gems alike.

Gems

Crafts & Hobbies

Identification of Gemstones is a comprehensive reference guide to gem and ornamental materials, and outlines all the features a gem tester has to know before making an identification. The experienced author team describe not only each natural gem species, but also their synthetic counterparts and the materials used as imitations, demonstrating how to avoid costly mistakes. End of chapter summaries, details of further reading, and the companion website combine to provide all the support needed by professional gemmologists, antique and gemstone dealers, jewelers, and students.

Identification of Gemstones

Joyner, Louise

Earth Sciences

Nag Press

Today buyers cannot be sure whether or not a gemstone is man-made, if its color has been produced artificially, and if it will survive life in a piece of jewelry. This book enables gemstone and jewelry buyers to find out for themselves. A wide range of gem and ornamental materials is described, species by species, opening up the secrets they sometimes conceal, such as when they can be artificially manufactured, when they can be cleverly imitated by other materials, and when their color has been enhanced. Readers are told and shown what the tell-tale features are, and learn that while nothing is quite what it seems, there are ways in which they can spot give-away signs without needing to consult a laboratory.

Synthetic Imitation & Treated Gemstones

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Books by O'Donoghue, Michael