Refractometers Made Easy

Explains in non-technical terms how to use the refractometer to identify diamonds and 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 refractometer.

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This colorful book offers you a window into the world of Mahatma Gandhi, one of the most amazing people of the twentieth century. You will learn about Gandhi’s life—from his time as a student in London to his work for equality in South Africa and India—and his methods of peaceful, but not passive, resistance to injustice.

Newly updated and expanded, Diamonds gives you all the information you need to buy, collect, sell—or simply enjoy—diamonds with confidence and knowledge. Whether you are buying a diamond for an engagement ring, anniversary, to commemorate a special moment or for personal pleasure, today it is more important than ever to understand what you are buying. There are new shapes and cuts, fancy colors, high-tech treatments and sophisticated frauds. There are new ways to buy—such as Internet auctions. Buyers need a source of expert guidance. Practical, comprehensive and easy to understand, this book offers in depth all the information you need to buy sparkling diamonds with confidence, including: What is a diamond? An in-depth look at factors affecting differences in quality and cost. Diamond grading reports—why all the information is important, and what it tells you. How to compare prices. How to spot differences in stones that may appear to be the same quality. How to protect yourself from misrepresentation. Questions to ask when buying any diamond. What to get in writing. How to get what you want within your budget. Important information about buying on the Internet ... and much more! Written by an “insider,” this easy-to-read guide is the “unofficial diamond bible” for anyone who wants to get the most for their money and enjoy what they have purchased.

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.

This comprehensive book presents key issues in the technology of the soft drinks industry. Employing a user-friendly format and writing style, the author draws on more than thirty-five years' hands-on experience in technical management in the soft drinks industry. The diverse subjects discussed focus on key scientific and technical issues encounter

Explains in non-technical terms how to use the loupe and dark-field loupe to identify diamonds and 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 loupe and dark-field loupe.