Newly updated and expanded, COLORED GEMSTONES gives you all the information you need to buy, collect, sell— or simply enjoy—sapphires, emeralds, rubies and other colored gemstones with confidence and knowledge. With more varieties than ever before to choose from, including altogether new gems, revolutionary new cuts and new ways to buy gems—such as Internet auctions and TV shopping—there has never been a more exciting time to buy or collect colored gemstones. But there are also new high-tech treatments and sophisticated frauds to look out for. Lack of information, error or misrepresentation can make the thrill of buying a gem or piece of jewelry confusing, intimidating, overwhelming and costly. Buyers need a source of expert guidance. This practical, comprehensive, easy-to-understand guide provides all the information you need in order to know what to look for, and what to look out for, including: What qualifies as a “gemstone”? How to evaluate color—and its impact on price. Deciding between a natural gem and an enhanced gem ... and new glass-gemstone compositions. Colored gemstone synthesis and treatment. What to ask when buying the stone. What to get in writing. How to get what you want within your budget. Price guides for popular gems, opals and synthetic stones. Important information about buying on the Internet. ... and much more! Written by an “insider,” this easy-to-read guide is the “unofficial colored gemstone bible” for anyone who wants to get the most for their moneyand enjoy what they have purchased.

Master game design and digital art principles simultaneously with this all-in-one guide to creating games in the cutting-edge game engine Unity. Reworked for C# and Unity 2018 & 2019, and bursting with images and tutorials, Penny de Byl’s Holistic Game Development with Unity will help the reader gain the multidisciplinary skills needed to succeed in the independent game industry. Holistic Game Development with Unity includes new coverage on Augmented Reality, Networking, and Virtual Reality such as the Oculus Rift. Supplementary material, including instructional videos, discussion forums and art assets are provided in the companion website located at www.holistic3d.com. Learn to combine the beauty of art and the functionality of programming in de Byl’s third edition for Unity game development. Key features: Art and programming in Unity, the only one-stop shop for individual developers and small teams looking to tackle both tasks. Proven step-by-step tutorials show you how to design and structure an entire game in Unity with art assets. Revised to cover the Unity game engine versions 2018 and 2019. New coverage of Nav Meshes, Augmented Reality, Mobile Builds and Mecanim. An introduction to essential two- and three-dimensional mathematical and physics concepts. A portfolio of royalty free reusable game mechanics. Revamped and expanded accompanying website, www.holistic3d.com, features project source code, instructional videos, art assets, author blog, and discussion forums. Additional challenge questions and lesson plans are available online for an enhanced learning experience.

Tuning Fork Therapy® using Crystals with tuning forks is a manual instructing the user in how to incorporate crystals and gemstones with tuning forks in a healing session. Manual includes easy to follow directions and photographs. Certification and more information is available online at www.TuningForkTherapy.com

Celebrities and fashion runways are glittering with gemstones, more than ever these days. But for the growing hordes of jewellery makers, gemstones can prove very daunting to work with. Nancy Alden of the popular Beadworks series gives readers a full introduction to the craft and, in her typical fashion, takes all the anxiety out of the process. Readers will learn how to create stunning gemstone earrings, necklaces and bracelets - with a gem and corresponding project to complement any look. Plus today s wide availability and competitive pricing of precious and semi-precious stones, makes what had once been exclusive, expensive projects completely doable.

This book provides a lucid introduction to the basics of gemmology. It familiarizes archaeologists, art historians and conservators with the science of gemstones and allows them to understand the basic concepts of their provenance, typology and treatments. Which are the main types of gems? What treatments can be applied? How does one analyse gems? How can gems contribute to archaeometrical research? This volume is written by four experts in the fields of gemmology and archaeometry and addresses both students who need an introduction to this field and professionals who want to refresh their knowledge of the topic. This work is part of a series of introductory texts that deal with a broad range of materials-related topics in archaeometry.

East Africa is famous for its world-class gemstones and mineral specimens, most notably the highly sought-after blue tanzanite, found only in Tanzania in a very small area in the northeast. Many other minerals and gemstones are mined in the region and this is the first publication to showcase and examine those occurring in the five countries that make up East Africa – Kenya, Tanzania, Rwanda, Uganda and Burundi. The book includes: An introduction to the fascinating geology of the region, including a map depicting underlying geology and mineral occurrence; detailed descriptions of minerals, including their gemological properties, history, occurrence and diverse uses across all spheres of life (from jewellery to numerous household items and even space-shuttle components); multiple full-colour photographs of each mineral and gem specimen. An invaluable reference for collectors, gemologists, students and anyone with an interest in the earth sciences. Sales points: A first, fascinating record of East African minerals and gemstones; numerous beautiful photographs of each mineral in full colour; concise, authoritative and accessible text.