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Ruby, Sapphire & Emerald Buying Guide

Author : Renee Newman

Publisher :

Page : 0 pages

File Size : 22,92 MB

Release : 2009

Category : Emeralds

ISBN : 9780929975412

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Book Description

This guide helps buyers to evaluate these spectacular gems and it updates professionals on new treatments and sources of corundum and emerald. Using close-up photographs, the book shows how to make visual judgements about clarity. transparency, cut quality and brilliance. In addition, it helps you to understand lab reports and find appraisers and labs. You will also get tips on detecting imitations and synthetic stones. Let this guide provide the in-depth information you will need to be a smart buyer. Topics in this guide include: Quality evaluation; Gem treatments; Fakes and synthetics; Lab reports; Geographic sources; Appraisals; Gem cleaning & care; Savvy buying.



Ruby, Sapphire & Emerald Buying Guide

Author :

Publisher :

Page : 0 pages

File Size : 30,95 MB

Release : 2002

Category : Emeralds

ISBN : 9780929975337

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Book Description

To help you to be a smart buyer, this book discusses in detail how colour, shape, cut, clarity, transparency, treatments and geographic origin affect the value of rubies, sapphires and emeralds. The guide also explains how to distinguish imitation and synthetic stones from those that are real and natural. Each concept is illustrated with either photographs or line drawings. Many tips are given on buying, selecting, documenting and caring for these rubies, sapphires and emeralds.



The Ruby & Sapphire Buying Guide

Author :

Publisher :

Page : 212 pages

File Size : 31,58 MB

Release : 1994

Category : Business & Economics

ISBN : 9780929975214

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Book Description

You don't have to be a jeweler or gemologist to tell a ruby from red glass or a good sapphire from a bad one. The Ruby and Sapphire Buying Guide will show you how. It's easy to read, has lots of photos, and gives clear, step-by-step pointers on how to buy the best stone for the money. This is the only book to offer detailed guidelines and pictures on judging ruby and sapphire quality. Book jacket.





Pokémon

Author : Elizabeth Hollinger

Publisher : Random House Digital, Inc.

Page : 154 pages

File Size : 36,72 MB

Release : 2003

Category : Games & Activities

ISBN : 0761542566

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Book Description

Includes a complete walkthrough of the vast new Pokémon world as well as tips and strategies to help you win the contests.



Modified Maxwell Equations in Quantum Electrodynamics

Author : Henning F. Harmuth

Publisher : World Scientific Publishing Company

Page : 564 pages

File Size : 14,50 MB

Release : 2001

Category : Medical

ISBN : 9789810247706

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Book Description

1. Introduction. 1.1. Maxwell's equations. 1.2. Step function excitation of planar TEM wave. 1.3. Solutions for the electric field strength. 1.4. Associated magnetic field strength. 1.5. Field strengths with continuous time variation. 1.6. Modified Maxwell equations in potential form -- 2. Monopole, dipole, and multipole currents. 2.1. Electric monopoles and dipoles with constant mass. 2.2. Magnetic monopoles and dipoles with constant mass. 2.3. Monopoles and dipoles with relativistic variable mass. 2.4. Covariance of the modified Maxwell equations. 2.5. Energy and momentum with dipole current correction -- 3. Hamiltonian formalism. 3.1. Undefined potentials and divergent integrals. 3.2. Charged particle in an electromagnetic field. 3.3. Variability of the mass of a charged particle. 3.4. Steady state solutions of the modified Maxwell equations. 3.5. Steady state quantization of the modified radiation field -- 4. Quantization of the pure radiation field. 4.1. Radiation field in extended Lorentz gauge. 4.2. Simplification of Aev([symbol]) and Amv([symbol]). 4.3. Hamilton function for planar wave. 4.4. Quantization of a planar wave. 4.5. Exponential ramp function excitation. 4.6. Excitation with rectangular pulse -- 5. Klein-Gordon equation and vacuum constants. 5.1. Modified Klein-Gordon equation. 5.2. Planar wave solution. 5.3. Hamilton function for the planar Klein-Gordon wave. 5.4. Quantization of the planar Klein-Gordon wave. 5.5. Dipole current conductivities in vacuum



Ruby and Sapphire

Author : Richard W. Hughes

Publisher :

Page : 816 pages

File Size : 41,16 MB

Release : 2017-01-01

Category :

ISBN : 9780964509719

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Book Description

From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.



Colored Gemstones

Author : Antoinette Leonard Matlins

Publisher : Gemstone Press

Page : 211 pages

File Size : 48,91 MB

Release : 2005

Category : Antiques & Collectibles

ISBN : 0943763452

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Book Description

Purchasing coloured gemstones can be a magical experience, filled with excitement and anticipation. But lack of information, error, or misrepresentation can make buying gemstones confusing, intimidating, overwhelming, and costly. 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 coloured 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 jewellery confusing, intimidating, overwhelming, and costly. Buyers need a source of expert guidance. To help you avoid the pitfalls and keep the magic, Antoinette Matlins, an internationally respected expert on buying gems, puts her insider knowledge to work for you in this easy-to-read, easy-to-use guide. Practical, comprehensive, and easy to understand, the guide offers in depth 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 colour -- and its impact on price; deciding between a natural gem and an enhanced gem; coloured 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; And much, much more!



Colored Gemstones 3/E

Author : Antoinette Matlins, PG, FGA

Publisher : Turner Publishing Company

Page : 214 pages

File Size : 26,74 MB

Release : 2012-11-07

Category : Antiques & Collectibles

ISBN : 094376386X

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Book Description

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.



Jewelry & Gems The Buying Guide

Author : Antoinette Matlins

Publisher : Springer Science & Business Media

Page : 186 pages

File Size : 20,6 MB

Release : 2012-12-06

Category : Science

ISBN : 9401174636

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Book Description

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.