PRESIDIUM ELECTRONIC GEM GEMSTONE DIAMOND TESTER PGT
The Presidium Gem Tester / Color Stone Estimator provides a quick, easy, laboratory proven way to identify diamond and separate the most popular colored gem stones from one another. This valuable tool can eliminate human error when identifying precious gems. The Presidium Gem Testers accurate performance is based on the fact that different gem stones [...]
Game Programming Gems (Game Programming Gems Series)
For the countless tasks involved in creating a game engine there are an equal number of possible solutions. But instead of spending hours and hours trying to develop your own answers, now you can find out how the pros do it! Game Programming Gems is a hands-on, comprehensive resource packed with a variety of game [...]
Gemstone Buying Guide, Second Edition: How to Evaluate, Identify, Select & Care for Colored Gems
Buying colour gems is a challenge. To make a wise choice, you must be able to judge their colour, flaws, transparency and brilliancy. This guide will show you how. Written for both consumers and professionals, it is easy to read, has over 200 colour photographs and gives practical pointers on how to buy the best [...]
Simon & Schuster’s Guide to Gems and Precious Stones
Simon & Schuster’s Guide to Gems and Precious Stones provides both the connoisseur and the casual collector with a compact, easy-to-use volume describing more than 100 rare varieties of minerals whose beauty and mystery have possessed our imaginations from time immemorial. More than 450 brilliant photographs accompany profiles of each gem, covering such aspects as [...]
Gem Sports Black/Orange Flame Print Volleyball Spandex Shorts
Hot! volleyball spandex for practice, games, or team workouts. Get your team fired up in these comfy polyester / spandex compression shorts. Great gift idea or team motivator. 2.5″ inseam. Click here for more information.
Gem Identification Made Easy, Third Edition: A Hands-On Guide to More Confident Buying & Selling
New, revised, expanded edition of the first and only book of its kind. Covers the latest gems, synthetics, treatments, and instruments. Easy to use. Practical. Non-technical. Shows how to identify diamonds, coloured gemstones, and pearls, and separate them from fakes and look-alikes. Explains what instruments are needed, how to use them, where to get them, [...]
Gemstones of the World: Newly Revised & Expanded Third Edition
Gemstones of the World is truly the single volume that every hobbyist, jeweler, jewelry maker, and rockhound needs: it’s the cornerstone of the field. And this updated edition contains a host of new findings on “Gemstones for Collectors,” additional gems in the “Table of Constants,” and the “double fraction” figures that experts have long wanted-a [...]
Yoga Gems: A Treasury of Practical and Spiritual Wisdom from Ancient and Modern Masters
Here is an inspirational and accessible introduction to the deep inner wisdom of yoga gathered from sources both ancient and modern by one of America’s most respected yoga scholars. YOGA GEMS For the millions of Americans who now practice yoga regularly, here is the perfect introduction to the rich philosophical and spiritual tradition behind the [...]
Cunningham’s Encyclopedia of Crystal, Gem & Metal Magic
Cunningham’s Encyclopedia of Crystal, Gem & Metal Magic The Classic Guide to Crystal, Gem, and Metal Magic Practice an ancient magic that is both natural and powerful-the elemental Earth magic of rock, stone, and metal. This comprehensive and clear guidebook by Scott Cunningham has introduced over 200,000 readers to the secrets of over 100 gems [...]
Euler’s Gem: The Polyhedron Formula and the Birth of Topology
Leonhard Euler’s polyhedron formula describes the structure of many objects–from soccer balls and gemstones to Buckminster Fuller’s buildings and giant all-carbon molecules. Yet Euler’s formula is so simple it can be explained to a child. Euler’s Gem tells the illuminating story of this indispensable mathematical idea. From ancient Greek geometry to today’s cutting-edge research, Euler’s [...]