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to this edition In working with my own clients to acquire gemstones and jewelry since this book was first published in 1984, they have pointed out that most people buy "jewelry" and not "gemstones." Because the book offers so much practical advice and money-saving tips about buying jewelry, they urged me to change the title. So, in this edition The Complete Guide to Buying Gems has been changed to Jewelry & Gems: The Buying Guide. Consumer and professional response to the book has been very gratifying. Almost 14,000 hardcover copies are in circulation. We have received hundreds of letters, phone calls and in-person comments about the helpfulness and interesting information it provides. We thank you for encouraging us to make the book more widely available by bringing out this softcover edition. We have taken the opportunity of this softcover edition to update the price guides for diamonds and colored gemstones and, in light of the increase in both the popularity and price of pearls, to add a price guide for them in the "Guide to Popular Gems and Their Prices." Also, we want to take this opportunity to comment further on gem invest ment, taking into account major developments since the original manuscript was written in 1980.
Graphics Gems IV contains practical techniques for 2D and 3D modeling, animation, rendering, and image processing. The book presents articles on polygons and polyhedral; a mix of formulas, optimized algorithms, and tutorial information on the geometry of 2D, 3D, and n-D space; transformations; and parametric curves and surfaces. The text also includes articles on ray tracing; shading 3D models; and frame buffer techniques. Articles on image processing; algorithms for graphical layout; basic interpolation methods; and subroutine libraries for vector and matrix algebra are also demonstrated. Computer engineers and designers will find the book invaluable.
Graphics Gems V is the newest volume in The Graphics Gems Series. It is intended to provide the graphics community with a set of practical tools for implementing new ideas and techniques, and to offer working solutions to real programming problems. These tools are written by a wide variety of graphics programmers from industry, academia, and research. The books in the series have become essential, time-saving tools for many programmers.Latest collection of graphics tips in The Graphics Gems Series written by the leading programmers in the field.Contains over 50 new gems displaying some of the most recent and innovative techniques in graphics programming.Includes gems covering ellipses, splines, Bezier curves, and ray tracing.Disk included containing source code from the gems available in both IBM and Macintosh versions.
Accompanying disk contains ... "all of the code from all four volumes."--Page 4 of cover.
Vols. for 1911-13 contain the Proceedings of the Helminothological Society of Washington, ISSN 0018-0120, 1st-15th meeting.
One hundred years ago, in the Purple Hills of Luesonia, seven gems were stolen from the crown of a crystal statue of the goddess Istarra. Each gemstone born on Luesonia was alive and could hold within their crystal hearts great magical power. If used together for good, great things could happen. If the gems were used for evil, Luesonia would become a dark world. Many years later, Kajis, an evil warlord, found one of the seven gems, the green gem, Shagara. As soon as he possessed Shagara, he desired the other six gems for their magical powers. Kajis sent two Bduds to kidnap the Spectra Clan from the Purple Hills and enslave them in his castle dungeon. From the members of the clan, he chose twins, ten-year-olds Danu and Cronus, for their unique gifts of magic to locate and retrieve the other six gemstones. If the twins chose not to go on the quest, Kajis threatened to kill all the members of their clan. Danu and Cronus experience exciting adventures on the gem quest. Along the way, they meet up with several willing accomplices, human and alien, to help them gather the remaining gemstones before the day of the full moons. Danu and Cronus and their new friends know they cannot allow Kajis to possess the gems of Istarra.
A comprehensive study of the depictions of animals and their significance on Greek and Roman gems. The work examines the associations between animal depictions and the type of gemstone and its believed qualities. The study also compares the representation of animals on gems to other, larger media, and analyses the differences.