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Author: Tom Mitchell
Publisher:
Published: 2014-05-22
Total Pages: 68
ISBN-13: 9780990463306
DOWNLOAD EBOOK →Introductory text for beginning faceters. Learn the history, the terminology, the machines available, the parts of the machines and how to use them and learn to facet your first stone.
Author: Tom Herbst
Publisher: Facetable Books
Published: 2014-11-23
Total Pages: 428
ISBN-13: 9783000474743
DOWNLOAD EBOOK →Amateur faceter Tom Herbst lays out the steps necessary to transform a shapeless lump of rock into a glittering jewel that is unique and valuable. Along the way, he explains not only the "how" but also the "why," and provides helpful tips in dealing with many of the pitfalls that confront the beginning gem cutter.
Author: Andrew Brown
Publisher:
Published: 2019-06-12
Total Pages: 150
ISBN-13: 9781072755272
DOWNLOAD EBOOK →This book contains a collection of the author's finest faceting designs, taking severalyears to complete. It provides more than 50 optimized patterns in a range of shapesand introduces a new solid design concept known as 'fusion'. The 'fusion' concept is anadaptable, high performing design principle that empowers the faceter to achieve wellbalanced, strong performing cuts. It is termed 'fusion' as it balances odd symmetrywith even symmetry, to create a true 'fusion' between performance and design.The author believes that by considering gem faceting designing an art form, newground can be explored, and accounts for some of the more bespoke designs containedwithin the publication.Overall, the author has been mindful to include designs that will appeal to and benefitmost faceters, including: * 50 designs for the commonly used 96 index* A selection of designs for the 72, 84, and 120 indexes* Optimized angles to work in materials with refractive indices over a wide range* Frosted designs like the butterfly on the cover and 7 pointed stars* 16 Round designs not including frosted designs* 7 Square designs including square cushions* 4 Trillion and 2 heart designs* 10 Oval and 3 pear designs* 6 Rectangular designs including rectangular cushions * 3 Hexagons and other designs with assorted shapes
Author: Justin Prim
Publisher:
Published: 2021-07
Total Pages:
ISBN-13: 9781737057802
DOWNLOAD EBOOK →The Secret Teachings of Gemcutting is a collection of classic gemstone designs spanning 500 years. The designs are presented with full color photos, historical information, cutting advice, and design information. These are industry standard designs for the gem and jewelry trade for all the major gemstone cutting centers around the world. This collection marks the first time the designs have been compiled for public consumption. This volume will prove useful to both gemcutters who want to cut these essential designs and to jewelers who would like a visual aid to present different gemstone styles to their customers. Aside from the designs, the introductory chapters of the book contain invaluable information about gemstone design, optics, gem physics, modifying designs, pairing rough gems with an appropriate design, and more.
Author: Glenn Vargas
Publisher: G. & M. Vargas
Published: 2002
Total Pages: 340
ISBN-13: 9780917646096
DOWNLOAD EBOOK →Author: Tom Herbst
Publisher: Facetable Books
Published: 2014-11-23
Total Pages: 456
ISBN-13: 9783000474750
DOWNLOAD EBOOK →Amateur faceter Tom Herbst helps you expand your faceting horizons. You will learn about the optics and mathematics behind the magic of gemstones. Subsequent chapters on the properties and treatment of common gem materials will help you identify and make the most of your valuable rough.
Author: Glenn Vargas
Publisher:
Published: 1975
Total Pages: 0
ISBN-13: 9780917646072
DOWNLOAD EBOOK →Author: C. L. Murray
Publisher: Createspace Independent Publishing Platform
Published: 2016-03-12
Total Pages: 298
ISBN-13: 9781530198610
DOWNLOAD EBOOK →In a land of eagle-riding knights, bloodthirsty beasts, and a ruthless prince, no border is safe for long. And as smoke billows from the only blockade standing between the great city of Korindelf and certain doom, young Morlen races to escape the inevitable siege. Thrust from the chaos with thousands of snapping jaws on his trail, he discovers that the abilities he's buried all his life are awakening-and it could not have happened at a worse time. War has come, and he doesn't dare rely on his untested talents after stealing the coveted Goldshard, which makes strength and invincibility just a panicked whisper away. His dependency on it carries him through many dangers, until it becomes an enemy far worse than those he must fight hand-to-hand. And the allies he meets on his quest are just as troubled: a legendary warrior too afraid to leave his sheltered paradise, a wizard tormented by his past, and a disgraced king who has lost any hope of saving his people. A FACET FOR THE GEM brings Morlen from distant kingdoms to sprawling airborne battles, into the fiery breath of a stony dragon and side-by-side with a lady knight who is the last person in need of rescue. Follow him as his epic adventures culminate in a final showdown against swords, fangs, and greatest of all: his own fear.
Author: Edward J. Soukup
Publisher: Gem Guides Book Company
Published: 1962
Total Pages: 0
ISBN-13: 9780910652063
DOWNLOAD EBOOK →"This book contains everything the reader needs to know to facet gemstones expertly. Includes 22 beautiful cuts"--Amazon.com.
Author: Thomas Eckes
Publisher: Peter Lang Copyright AG - Ipsuk
Published: 2023-04-28
Total Pages: 0
ISBN-13: 9783631903049
DOWNLOAD EBOOK →Human ratings are subject to various forms of error and bias. Since the early days of performance assessment, this problem has been sizeable and persistent. For example, expert raters evaluating the quality of an essay, an oral communication, or a work sample, often come up with different ratings for the very same performance. In cases like this, assessment outcomes largely depend upon which raters happen to provide the rating, posing a threat to the validity and fairness of the assessment. This book provides an introduction to a psychometric approach that establishes a coherent framework for drawing reliable, valid, and fair inferences from rater-mediated assessments, thus answering the problem of inevitably fallible human ratings: many-facet Rasch measurement (MFRM). Throughout the book, sample data taken from a writing performance assessment are used to illustrate key concepts, theoretical foundations, and analytic procedures, stimulating the readers to adopt the MFRM approach in their current or future professional context.
