41. GIA: Gems & Gemology: Issue's Table Of Contents: Article Detail One of the small stones had a surfacereaching inclusion that GIA Research gem Instruments Books Alumni Association gems gemology Careers Available http://www.gia.org/gemsandgemology/1423/18942/2072/issues_table_of_contents_arti

Home Wednesday, June 9, 2004 Printer-Friendly Page About GIA Education Gem Trade Laboratory ... How to Buy a Diamond Service Center Subscriptions Contact Us Request a GIA Education Catalog FAQ's ... Help Search Virtual Campus Student ID# Password Register Here Current Issue Winter 2003, Volume 39, Issue 4 Click to Print Featured Gem News International: Blue Beryl Discovery in Canada In August 2003, an unusually dark blue beryl was discovered in Canada Yukon Territory Vancouver British Columbia ) and one of these contributors (LAG). Mr. Wengzynowski also is credited with the 1998 discovery of the Regal Ridge emerald deposit in the Yukon Territory , which is ~100 km east-southeast of the blue beryl occurrence. These efforts were financed by True North Gems Inc. of Vancouver o e Seven fragments of the beryl, ranging from deep blue to medium blue, were chemically analyzed by electron microprobe by one of us (LAG) at the University of British Columbia Arizona American Mineralogist o e Gems , Butterworth-Heinemann, Oxford, England, 1994, p. 124). William R. Rohtert (

42. Books On Gems And Precious Stones Arab Roots of gemology by Ahmad Ibn Yusuf Tifashi. Pearls (Fred Ward gem Book) by Fred Ward (Paperback The Love of stones by Tobias Hill (Hardcover January 2002 http://www.dropbears.com/b/broughsbooks/science/gemstones.htm

more search options Books on Emeralds, Turquoise, Rubies, Pearls, Saphires... Home Science > Gems and Precious Stones Related Sections Science Earth Sciences Geology Diamonds ... Smithsonian Institute Books Departments Posters Calendars Science Magazines Science Documentaries ... Microscopes Resources Books UK Ordering Information Best Sellers Magazines Science Magazines Gemstones of the World, Revised Edition by Walter Schumann (Hardcover October 1, 2000) Simon and Schuster's Guide to Gems and Precious Stones by C. Ciprianai, et al (Paperback March 1986) Turquoise Unearthed: An Illustrated Guide by Joe Dan Lowry (Paperback November 15, 2002) Collecting and Classifying Coloured Diamonds by Stephen C. Hofer Listed under Diamonds Amber by Andrew Ross Book Description Amber has captured the human imagination for centuries, as amulets, ritual cups, and beads dating back 10,000 years attest. It is a fascinating substance, one that offers a unique intersection of the fields of paleontology, botany, entomology, and mineralogy. The fossilized resin of ancient trees, amber preserves organic material-most commonly insects and other invertebrates-and with it the shape and surface detail that are usually obliterated or hopelessly distorted during the mineralization we... Paperback: 74 pages Harvard Univ Pr; ISBN: 0674017293; (March 1999)

43. Outer Limits Of Gemology, JCK, 6-99 THE OUTER LIMITS OF gemology. Excerpts from JCK, June 1999 by Rob Bates. Colorless gemquality stones, but no one seems to have done it on a large scale. http://www.lucentdiamonds.com/Outer Limits of Gemology, JCK, 6-99.htm

THE OUTER LIMITS OF GEMOLOGY Excerpts from: JCK, June 1999 by Rob Bates Colorless gem-quality stones, but no one seems to have done it on a large scale. "It's hard to produce a high-quality synthetic diamond,' notes Shigley. "They tend to be more included and fractured." In fact, some think mass-producing near-colorless gem-quality stones is impossible. Even Grizenko, who is producing blue, red, and pink syntheticsand sell- them at "a fraction" of the cost of naturals does not think it's possible to mass-produce near-colorless synthetics economically'. "It's hard to grow a good white, because you have to carefully control for things like nitrogen," he observes. For now, there are only fancy colored synthetics on the market, and a pretty limited number at that. The industry doesn't seem worried about s ynthetic fancy-colored stones, since most colored diamonds are sent to labs anyway to document origin of color. But near-colorless synthetics are. another matter. Even though diamond dealers don't think gem-quality near-colorless synthetics will hurt the market for naturals-just as the market for emeralds, rubies, and other colored gems hasn't been damaged by syntheticsdetection could be a big problem. Like synthetic moissanite, synthetic stones fool a thermal tester into reading "diamond" because that's technically what they are. But visual detection of synthetic diamonds, unlike moissanite, isn't easy. "It's a little harder to detect," Shigley says. "To me the features seem fairly distinctive, but I'm a little biased because I've seen a number of samples." (For a list of the identifying characteristics of synthetics, see "How to Detect Synthetics," p. 127.) All this has led industry leaders to call for a synthetic-sniffing "black box" along the lines of a thermal tester or the new moissanite detectors.

44. Gems, Which Heal And Cure for fraud. But yes, as a retailer of stones, fully convinced that a gem is nature s as Gurmit Singh, director, Indian Institute of gemology in Delhi http://www.lifepositive.com/Spirit/traditional-paths/rituals/gems.asp

Register to the site Shopping Bazaar Find Practitioner Wallpapers ... Magazine THE THERAPEUTIC POWER OF GEMS BACK TO HOME By Ritu Khanna We tend to examine a gem for its clarity, color and carat. Add to that another 'C': Cure. The healing power of a jewel, and its effect on the body, mind, heart and soul, is painstakingly charted by astrologers, duly acknowledged by gem dealers, and then reinforced by wearers who think them to be a stepping stone to better health, prosperity and happiness. But can wearing a particular jewel heal and cure all your problems? RUBY Of carmine red colour, a ruby is the sacred stone of the Burmese, who compare it to a human soul about BLUE SAPPHIRE A variety of corundum, deep azure blue in color, a blue sapphire is a sacred stone for the Hindus and is consecrated to their gods. It is dedicated to Indra, the god of thunder. The Buddhists believe it reconciles man and God. It changes color if the wearer is unfaithful. A blue sapphire prevents fear, and helps overcome depression . It influences financial matters and is associated with prosperity. The stone is very cold and should never be worn alone, but with a red coral or copper ring.

45. [Ganoksin] Jewelry Making - Basic Optics Notes For Gemology Basic Optics Notes for gemology Copyright © Charles LewtonBrain 1986 -1994. 1. Transparent stones. An object viewed through the gem shows outlines clearly and http://www.ganoksin.com/borisat/nenam/optic.htm

The Gem and Jewelry World's foremost Resource on The Internet. Site Map Orchid Forums Archives Jewelry Making Articles ... Gemology Brain Press Publications Box 1624, Ste M, Calgary, Alberta, Canada T2P 2L7 Tel: 403-263-3955 Fax: 403-283-9053 Writings Gallery Contact Basic Optics Notes for Gemology The optical characteristics and properties of gemstones often provide the fastest and best methods of identification. A certain amount of theory is necessary as optical principles determine cutting methods, gemstone attributes and the function of gem testing instruments. Light Light and our perception of it play a crucial role in our appreciation of and identification of gemstones. Visible light however comprises only a small part of what is referred to as the electromagnetic spectrum A rough wavelength scale follows: Note what a small portion of the spectrum comprises visible light. Light can be thought of as progressing outward in a single path (a ray). The ray forms a wave vibrating in all planes at right angles to the direction of travel, the line of the ray. White light is composed of a mixture of a great many wavelengths each of which is perceived as a different colour. The wavelength of violet light for example is about half that of red light. The wavelengths of white light may be divided into:

46. [Ganoksin] Jewelry Making - Some Notes On Making Your Own Polariscope For Gemolo making your own polariscope for gemology Copyright © Charles quartz and tell whether a gem is biaxial well) and upper (sunglasses) filters to examine stones. http://www.ganoksin.com/borisat/nenam/polaris.htm

The Gem and Jewelry World's foremost Resource on The Internet. Site Map Orchid Forums Archives Jewelry Making Articles ... Home Made Brain Press Publications Box 1624, Ste M, Calgary, Alberta, Canada T2P 2L7 Tel: 403-263-3955 Fax: 403-283-9053 Writings Gallery Contact Some Notes on making your own polariscope for gemology Polariscopes are a very useful, simple and inexpensive to make piece of gemological equipment. They are used to tell glass from gem materials synthetic spinel from all other materials, singly refractive from doubly refractive, crystaline from cryptocrystaline material, doublets and triplets from other gems, identify yellow Verneuil corundum (Plato test-see Liddicoat -GIA), determine quartz definitively from other materials, tell whether a transparent gemstone is biaxial or uniaxial in its crystal system. This is pretty good or equipment that may be as simple as a camera lens and a pair of polaroid® sunglasses. A light source would be a flashlight, which fits in the tube also. I use my microprojector as a light source. A paper disc is placed just below the lower polarizing filter to diffuse the light somewhat. A strainless glass sphere on a rod is available for resolving interference figures of gems with the polariscope. This would identify quartz and tell whether a gem is biaxial or uniaxial in crystal system. GIA and Hanneman sell them.

47. Colored Stone - Inside The Industry - Links Provides training in gemology to those dealing with sale and marketing of diamonds, colored stones, and pearls helps to establish guidelines for gem and jewelry http://www.tucsonshowguide.com/links.cfm

:: Site Index :: Pull down to use Colored Stone Home Favorite Designer Contest About CS Advertising Archives Ask the Editor Book Highlights Classifieds In This Issue Industry Events Industry Links Show Calendar -Subscriptions- Subscription Information Order a Subscription Give a Gift Customer Service -Current Issue- May/June Articles: Style: Fresh Possibilities Selling: Pearls of Wisdom -Show Guides- Tucson Show Guide Fall Show Guide Vegas Show Guide -Business Info- TOUCHSTONE: Marketing Guide Media Kit Online Lapidary Journal This month's issue Subscribe to Colored Stone Give a Gift ... Contact Customer Service These links will take you all over the gem and jewelry industry, from trade associations to service providers to promotional agencies. If you know of an organization that is not listed, e-mail and let us know. Gemstone and Pearl Associations Crime and Legal Issues Gemology and Gemological Laboratories Government Agencies and International Trade Organizations ... Commercial Sites - Buying and Selling, Discussion, Education, News Jewelry Schools - United States and International Gemstone and Pearl Associations American Gem Trade Association A not-for-profit professional trade association serving the colored gemstone industry in the United States and Canada.

48. Colored Stone September/October 2002 - Dissecting The Atom New gem identification techniques take gemology to the it possible to identify trace elements, treatments, and origins of colored stones that could http://www.tucsonshowguide.com/stories/sep02/gemology.cfm

:: Site Index :: Pull down to use Colored Stone Home Favorite Designer Contest About CS Advertising Archives Ask the Editor Book Highlights Classifieds In This Issue Industry Events Industry Links Show Calendar -Subscriptions- Subscription Information Order a Subscription Give a Gift Customer Service -Current Issue- May/June Articles: Style: Fresh Possibilities Selling: Pearls of Wisdom -Show Guides- Tucson Show Guide Fall Show Guide Vegas Show Guide -Business Info- TOUCHSTONE: Marketing Guide Media Kit Online Lapidary Journal September/October 2002 September/October 2002 Vision Underground The Cutting Edge Dissecting the Atom Designs: Carpets of Sparkle Related Articles Extended gemology coverage New gem identification techniques take gemology to the foundation of matter. By Marlene A. Prost T his is an exciting era for gemologists. High-tech analytical techniques now make it possible to identify trace elements, treatments, and origins of colored stones that could only be guessed at decades ago. Paulo Vasconcelos, a professor at the University of Queensland in Australia, has used high-tech techniques for a decade to study color in quartz and chrysoprase. Employing a technique called Electron Probe Microanalysis (EPMA), he studied the iron content in ametrine and determined that, contrary to previous theories, the citrine zones actually contained more iron than the amethyst zones.

49. Gems Minerals Bibliography Geogem gemology Overview. http//www.geogem.com/gemmology.htm. Very useful information on the gemological properties of gem stones. The Image. http://www.calacademy.org/research/library/biodiv/biblio/gems.htm

California Academy of Sciences Library World Wide Web Books Children's Books Video WORLD WIDE WEB Chemical Compositions of Minerals and Gems http://www.geology.wisc.edu/~jill/mineral.html It’s just like the title sounds. Desert Environment: Minerals and Geology Index http://www.desertusa.com/Thingstodo/geo/geology.html Click on a mineral to find more information. Gemology http://www.geocities.com/Y o semite/trails/3085/Gemmology.htm Links, links, and more links about gemology, the study of gems. Gems and Precious Stones http://www.geology.wisc.edu/~jill/306.html Many images and resources. GeoGem: Gemology Overview http://www.geogem.com/gemmology.htm Very useful information on the gemological properties of gem stones. The Image http://www.theimage.com/ Pictures of minerals and gemstones. The Mineral Gallery http://www.themineralgallery.com/ Descriptions, pictures and information on gemstones and minerals, by name, class, groupings and physical properties. Mineralogy Database http://www.webmineral.com/

50. GIA: Diamond Grading And Gem Stones By The Gem Stone And Diamond Specialist At B instructors have become recognized as the final authority on diamond grading and gem identification for gem stones. Setting International Standards in gemology. http://www.clarityenhanced-diamonds.com/about_the_gia.htm

Home Wish list About us Products ... Contact us Call Now Online Jewelry Store What is GIA? The Gemological Institute of America (GIA) was first established in 1931 . GIA is the world’s foremost nonprofit institute of gemological research and learning. Conceived 72 years ago in the august tradition of Europe’s most venerated institutes, GIA discovers (through GIA Research), imparts (through GIA Education), and applies (through the GIA Gem Laboratory and GIA Gem Instruments) gemological knowledge to help ensure the public trust in gems and jewelry. With over 800 employees, the Institute’s world-renowned scientists, researchers, gemologists, and instructors have become recognized as the final authority on diamond grading and gem identification for gem stones Setting International Standards in Gemology GIA’s groundbreaking scientific research has been covered for more than 65 years by its award winning quarterly journal, . The Institute’s history of education, research, laboratory services, and instrument development reads like a virtual chronicle of the jewelry industry’s own growth and sophistication. For example, GIA is the

51. GemRx: GemRocks By R. V. Dietrich So far as the gems gemology reports, several of them introduced me to Many people who buy cheap gem stones under fanciful names probably would not buy the http://www.cst.cmich.edu/users/dietr1rv/gemrx.htm

GEMROCKS: Compiled by R. V. Dietrich, Professor Emeritus Illustrations by Jeffrey Scovil, Dick Dietrich and others Comments and suggestions are welcome This compilation is dedicated to the memory of ADOLPH KNOPF (1882-1966), who instilled in me an insatiable curiosity about rocks. PREFACE The "compiled by" preceding my name on the "title page" seems appropriate because much of the included information is available in previously published material. To all those whose information is incorporated in this presentation I acknowledge my debt of gratitude: Two groups in particular warrant special mention: the chroniclers who have helped preserve legends, anecdotes etc . about gemrocks; and those who, during the last several years, have recorded so many observations about gem materials in the GemNews and Gem Trade Lab Notes columns published in "Gems & Gemology." Several of the legends I mention are recorded by Kunz (1913) and Merrill (1922); many, however, are tidbits I have read or heard over the last approximately 70 years where or from whom I do not recollect and I have not searched for possible sources to cite in this document. So far as the "Gems & Gemology" reports, several of them introduced me to gemrocks I might otherwise have overlooked. Undoubtedly some rocks used as gemrocks are not included in this document and noteworthy information is not given about some of those that are included. I shall greatly appreciate readers' directing my attention to such omissions for possible inclusion in my planned, continual updating of this document.

52. BOOKS - MINERALS, GEOLOGY, GEMOLOGY, FLUORESCENT MINERALS, MICROMOUNTING, FIELD special mineral and mining localities, gemology, geology, mineralogy with information on gems and precious stones in ancient on what qualifies as a gem material http://www.minresco.com/usedbooks/usedbooks03.htm

Below are listings of used books that we feel are of special interest. Titles include books covering special mineral and mining localities, gemology, geology, mineralogy, fluorescent minerals, micromounting, field collecting guides, etc. PAGE 3 OF 7 DANA’S TEXTBOOK OF MINERALOGY th Edition - By W. E. Ford, 9 X 6, 851 pages, illustrated with several hundred line drawings and crystal drawings, cloth bound. This book is sub-titled with an extended treatise on crystallography and physical mineralogy, and continues the work of Edward Salisbury Dana. This 4 th Edition of the series of Dana’s Textbook of Mineralogy was initially published only a little over ten years since the 3 rd Edition. The science of mineralogy had so many new developments during this period, that it was necessary to present the new data in this highly revised 4 th Edition. Numerous changes and updates have been made in all areas of the book. The Part I chapters include general morphological and mathematical relations of crystals, with revised data on the six crystal systems. Measurement of the angles of crystals, compound or twin crystals, irregularities of crystals, and crystalline aggregates are also covered.

53. Gemology Articles by Jean on gemology. First, look at a lot of stones at gem Shows, jewelry stores and lapidary shops. Ask questions. Start with some of the basics http://www.mysticrystals.com/gemology.htm

Articles by Jean on Gemology The Four C's Of Colored Stones a general overview of rating colored stones, including an addendum with additional details for those in the trade Watch Out For Windows! helpful tips on evaluating how well a gemstone is cut THE FOUR C's OF COLORED STONES You're probably familiar with the four "C's" of diamonds, but you may not have heard as much about the four "C's" of colored stones. Colored stones include all stones except diamond, even though many other gemstones can also be clear and transparent. C OLOR You are first attracted to a gemstone by its color. Color can been classified by: HUE red,green, bluish-green, etc. TONE lightness or darkness SATURATION intensity More about color C LARITY The second thing you see involves clarity. Clarity refers to: BLEMISHES on the surface INCLUSIONS internal characteristics or irregularities within the stone Each stone is unique and its inclusions can be used as "fingerprints" to identify it. Unlike the standard grading system in place for diamonds, colored stones do not yet have a universally accepted system. More about clarity C UT Cut does not refer to the shape of a stone, but to how well it is cut or its:

54. Jeweler Central - Sapphires gemstones and Jewelry gem stones gemstones gems Crystals Minerals gold Spinel gemstones from Asia Home Inventory gem Basics gemology gem Grading http http://www.jewelercentral.com/index.php?cat=52&t=sub_pages

55. Links Directory - Gem And Jewelry Resources The affordable way to learn about gems, gemology, lapidary and jewelry . All components and pendants are semiprecious stones set in sterling silver . http://www.wire-sculpture.com/links/gemandjewelryresources.html

View Cart Check Out Track Your Package Returns ... Order/Return Policies Jewelry Making Packages Small Biz Package Pro Biz Package Master's Biz Package Name Writing Package Discount Supplies Beads Cameos Closeouts Findings ... All Discount Supplies Start selling your jewelry online today! The Handcrafted Jewelry Mall Teaching Tools Bootcamps Ebooks Books on CD Newsletter ... Resource Center WEEKLY SPECIAL Item : Name: 4-5mm White Rice Pearl Strand Discount Price: Special Price: $1.99 Gem and Jewelry Resources Home Page ThemeIndex Gem and Jewelry Resources 695 Distinct Links Please support our Link Partners by visiting them. Bob's Rock Shop: The First 'Zine for Mineral Collectors and Rockhounds... 431 pages found, 280 links found, 717 score http://www.rockhounds.com FACET SHOPPE -Gems, Faceting, Rough and Cut Gemstones, and Faceting Info fo... Welcome to GEMCUTTER.COM - Home of the Facet Shoppe! THE place for faceters of all skill levels and anyone interested in gemcutting to find information and products related to faceting, rough gems, c... 31 pages found, 29 links found, 1808 score

56. Publications Of George Rossman gems and gemology 20, 163166. Rossman GR (1982) Irradiation of colored gem stones. International Geological Symposium, Proceedings 1, 91-99. http://minerals.gps.caltech.edu/mineralogy/Publications/CV_gems.htm

Publications dealing with color and properties of gem minerals PAPERS Chi M, Goreva GS, Rossman GR (2002) Fibrous nanoinclusions in massive rose quartz. HRTEM and AEM investigations. American Mineralogist 87, 269-276. Balitsky VS, Makhina IB, Marina EA, Rossman GR, Lu T, Shigley JE (2001) Growth and characteristics of some new varieties of coloured quartz single crystals. High Pressure Research 20, 219-227. Goreva JS, Chi M, Rossman GR (2001) Fibrous nanoinclusions in massive rose quartz. The origin of rose coloration. American Mineralogist 86, 466-472. Taran MN, Rossman GR (2001) Optical spectroscopic study of tuhualite and a re-examination of the beryl, cordierite and osumilite spectra. American Mineralogist 86, 973-980. Balitsky VS, Makhina IB, Mar'in AA, Shigley JE, Rossman GR (2000) Industrial growth, morphology and some properties of bi-colored amethyst-citrine quartz (ametrine). Journal of Crystal Growth 212, Fritsch E, Rossman GR (2000) La couleur dans les gemmes. Pour La Science (French edition of Scientific American) 2000, 36-41. Balitsky VS, Machina IB, Mar'in AA, Lu T, Shigley JE, Rossman GR (1999) Russian synthetic ametrine. Gems and Gemology 35, 122-134.

57. Gem Information Edelstein Informazion Informazione Natural Custom Jewelry Loose loose gemstones,loose stones,gemstones gallery,gem dealers,WHOLESALE gemstones,gemcutters,gemcutters,gemcutting,gem-cutting, gemology,Facetting,facetted stone http://www.swissgemshop.ch/gem_information.html

tanzanite black opals australian boulder opal matrix jelly tanzanite alexandrites natural gemstones gem gemstone natural alexandrite blue emeralds rubies sapphires ruby emerald gem australian black opal boulder opals matrix opal maxican fire opal tanzanites aquamarines turmalines ruby rubies burma emerald alexandrite sapphire tanzanite diamond tanzanite australian black opal alexandrite sapphire zircons cats eye star rubie star sapphire diamond diamonds emerald columbian ... Back To Home Page setTimeout('location.href="http://www.swissgemshop.ch/home.html"',1)

58. Shopping, Jewelry, Supplies: Gemstones Lapidary Pages A gem dealer with a comprehensive introduction to gemology and the Specializing in the unusual, exotic, and hard to find gem stones such as http://www.combose.com/Shopping/Jewelry/Supplies/Gemstones/

Top Shopping Jewelry Supplies ... Rough and Slab Related links of interest: Science:Earth Sciences:Geology:Rocks and Minerals:Gemstone Business:Consumer Goods and Services:Jewelry Business:Consumer Goods and Services:Jewelry:Laboratories Business:Consumer Goods and Services:Jewelry:Supplies:Wholesale and Distribution:Loose Stones ... AJS Gems - Importer and exporter of rough and polished gemstones for the gem industry, gem cutters, jewelers, lapidaries and collectors. All That Glitters - Features a range of gemstones as well as some jewelry. Aloe's Earth - Retail distributor of high-quality gems and crystals. Alpha Imports (NY), Inc. - Faceted, cabochon and fancy cut loose gemstones. Amber-Werx Incorporated - Offering Colombian amber, Lapis lazuli and lapidary equipment. Ammolite Guaranteed - Ammolite jewelry, Feng Shui ammonites and Cretaceous Period ammonite fossils. Apsara Gems - UK company offering rubies and sapphires. Artistic Jewelry and Lapidary - Specializing in rocks, gems and minerals supplies. Also offers custom jewelry. ArtisticCarver.com

59. The Optical Design Of Gemstones of view, the optical design of gemstones is a and a member of the American gem Society (www gemmological Association of Great Britain, J. gemology, October 2000 http://www.gemology.ru/cut/english/optical/_page5.htm

Diamond Calculator Diamond 3D Book Educational Programs Testing Laboratory ... References Gemstone fabrication and characterization technology have made important advances. Today, some cutters can produce stones in which each facet can be located to less than 0.01 mm and to 0.2°, a remarkable achievement. And variations on this order can indeed change a gemstone’s appearance. Sarin Technologies Ltd. produces a machine that is capable of acquiring gem proportions, facet angles and locations, and generating CAD files that can be imported into optical design and analysis programs. An elegant way to test a gem is the Firescope, invented in Japan in 1984. The Firescope is a simple device that uses a small cap, painted red on the inside, a diffused white-light source and a 10X eyepiece [see Fig. 8(a)]. The Firescope does not measure fire but instead shows the gem’s ability, per crown zone, to bring light to an observer’s eye [see Fig. 8(b)]. Under a Firescope, light leakage through the pavilion appears white and high angles appear black. Red or red hues indicate that the stone can bring different amounts of light from a given angular range. Both the spatial view of a gem and the angular spectrum are complementary representations. There is not a one-to-one mapping between these representations because, given Fresnel reflections, more than one ray direction can light a facet.

60. Books About Gems, Gemology & Minerals At Joslin Hall Rare Books notes The text begins with general gemology properties, geographical C. American gem Cabochons. Handbook of Domestic Semi-Precious stones Cut Unfacetted. http://www.joslinhall.com/gems.htm

Books about Gems, Conklin, Lawrence H. Notes and Commentaries on Letters to George F. Kunz. Correspondence from various sources, including Clarence S. Bement, with facsimiles. New Canaan; Tiffany & Co.: 1987. For students of American gemology the name George Frederick Kunz needs no introduction. For others, suffice it to say he was probably the most important figure in American gemology in the first decades of the 20th century. In 1977 Lawrence Conklin purchased an archive of most of Kunz's correspondence -some 7,000 letters. This volume contains 43 examples, and provides some background on Kunz's correspondents and his work with them. Originally published by Conklin in 1986 in a very limited edition with an original letter. This edition is easier to find, and much cheaper... Hardcover. 8.5"x11.5", 137 pages, color plate and many b/w illustrations; a near fine copy. [03720] $125.00 Diamonds. Proceedings of the First International Congress on Diamonds in Industry -1962. London; The Industrial Diamond Information Bureau: 1963. A massive amount of technical and industry information. Hardcover. 9"x11", 407 pages, b/w illustrations; light wear. [00307] $125.00

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