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This edition has been revised and expanded to reflect recent and varied developments in the highly specialized field of gemology. Among these are: gemstone synthesis; imitation gems; the alteration of gems to improve, add, remove or otherwise change their color, phenomena or clarity; the importance and widespread uses of the microscope to reflect the aforementioned developments; and a number of new gem minerals or new forms of previously described minerals recently discovered or actively marketed for the first time. The chapter on Descriptive Gemology has been divided into two groups: important gemstones (those gem materials most widely used in jewelry and ornamental objects) and less important gemstones (those less commonly encountered).

A concise, systematic, yet comprehensive ``textbook'' treatment of the science. Examines origin, chemistry, crystallography, physical properties, and optical properties of gemstones, and discusses methods and instruments used to determine these properties. Highlights recent advances and important contributions; explores new methods of study and determination, crystal structures, causes of color, new gem minerals, new methods of gem synthesis, manufactured gems, chemical compounds used as substitutes, and imitations and simulations. Includes 12 full color plates, 350 halftones and line drawings, and a Gem Index that lists commonly sought characteristics along with page number references.

A concise, systematic, yet comprehensive ``textbook'' treatment of the science. Examines origin, chemistry, crystallography, physical properties, and optical properties of gemstones, and discusses methods and instruments used to determine these properties. Highlights recent advances and important contributions; explores new methods of study and determination, crystal structures, causes of color, new gem minerals, new methods of gem synthesis, manufactured gems, chemical compounds used as substitutes, and imitations and simulations. Includes 12 full color plates, 350 halftones and line drawings, and a Gem Index that lists commonly sought characteristics along with page number references.

This edition has been revised and expanded to reflect recent and varied developments in the highly specialized field of gemology. Among these are: gemstone synthesis; imitation gems; the alteration of gems to improve, add, remove or otherwise change their color, phenomena or clarity; the importance and widespread uses of the microscope to reflect the aforementioned developments; and a number of new gem minerals or new forms of previously described minerals recently discovered or actively marketed for the first time. The chapter on Descriptive Gemology has been divided into two groups: important gemstones (those gem materials most widely used in jewelry and ornamental objects) and less important gemstones (those less commonly encountered).

Winner, 1994 Geoscience Info Society Best Reference Work Award This is the first comprehensive bibliography of gems and precious stones ever published, containing over 7,500 entries--predominantly books, but also periodical articles of significant material of historical value, from 1500 up to 1985, with some books published after that date. All important works are described, collated, and assessed in terms of content, accuracy, and importance, with remarks added on bindings and physical features that will enable librarians, researchers, booksellers, and collectors to verify editions and states as well as completeness of copies. Illustrations; subject index. The bibliography is based mostly on the Sinkankas Library, generally agreed to be the largest and most complete collection of its kind, now in the Gemological Institute of America, Santa Monica, CA.

A glossary of over 4000 English and foreigh words, terms and abbreviations that may be encountered in English literature or in the gem, jewelry or art trades. Original published in 1948 and this is the revised, SIXTH Edition.

A glossary of over 4000 English and foreigh words, terms and abbreviations that may be encountered in English literature or in the gem, jewelry or art trades. Original published in 1948 and this is the revised, SIXTH Edition.

Emeralds of Pakistan: Geology, Gemology and Genesis 1.13

PP xii + 269 with 81 color plates; numerous b&w figures and illus. Examines emeralds of Pakistan from three viewpoints - geologic occurrence, physical and chemical characteristics of the gem and origin. Also summarizes the geologic occurrence of other world-wide emerald deposits. A scarce work.

This striking presentation contains 161 full color plates of flawless gemstones and talismans with unparalleled commentary drawn from ancient sources largely unkown to western scholars.

“Leaves no illustrative source unturned, embellishing . . . with portraits and oil paintings, engravings, woodcuts, old catalogues, ancient writings, inscriptions, drawings, publicity materials, and early photographs.” ―Gems and Gemology This is the first book devoted exclusively to rings to consider them thematically rather than chronologically. The author brings her rich historical and literary knowledge to bear as she considers signets; rings associated with love, marriage and friendship; devotional, protective, and ecclesiastical rings; memento mori and memorial rings; rings associated with famous people and events; decorative rings; diamond rings; and rings as accessories. She helps us delight in them as works of art, and she makes their context come alive through paintings, drawings, and vivid quotations.Rings of all periods are included―from ancient Egypt, Greece, and Rome through the Middle Ages and Renaissance up to the twentieth century. The rings are drawn not only from great museums but also from private collections, preeminently that of the noted gem dealer and art patron Benjamin Zucker. 483 illustrations, 455 in color

The mysterious powers of gems, crystals, and minerals are finally explained in this practical guide to creating talismans. Casting a modern light on the age-old practice of talismans, gemologist Henry M. Mason correlates the mystical properties of these wondrous objects with the science of gemology. Connecting with the universal life force, the proper talisman can focus and magnify your own qualities―helping you fulfill dreams and desires. Mason's seven secrets explore how crystal structure, color, and chemistry contribute to a talisman's natural energies for aiding in attraction, protection, self-improvement, creativity, tranquility, spiritual awakening, and more. From selecting and preparing the proper mineral to empowering your talisman, this guide takes you through every step of creating and using talismans and amulets for optimum effect.

“Leaves no illustrative source unturned, embellishing . . . with portraits and oil paintings, engravings, woodcuts, old catalogues, ancient writings, inscriptions, drawings, publicity materials, and early photographs.” ―Gems and Gemology This is the first book devoted exclusively to rings to consider them thematically rather than chronologically. The author brings her rich historical and literary knowledge to bear as she considers signets; rings associated with love, marriage and friendship; devotional, protective, and ecclesiastical rings; memento mori and memorial rings; rings associated with famous people and events; decorative rings; diamond rings; and rings as accessories. She helps us delight in them as works of art, and she makes their context come alive through paintings, drawings, and vivid quotations.Rings of all periods are included―from ancient Egypt, Greece, and Rome through the Middle Ages and Renaissance up to the twentieth century. The rings are drawn not only from great museums but also from private collections, preeminently that of the noted gem dealer and art patron Benjamin Zucker. 483 illustrations, 455 in color

Colorful gems sparkle and shine. Where do these precious stones come from? Learn about gemology, the science and study of gems, with this informative book created in collaboration with the Smithsonian Institution. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from Smithsonian employees working in STEAM fields. Ideal for school reports and projects, this informational text will appeal to reluctant readers and ages 6-8. Ignite a curiosity about STEAM topics with this high-interest text!

A two volumes set, published in 1975 and 1976: fine copies in dustjackets. xv., 675 pp., ix, 494 pp. A very comprehensive and widely respected work by John Sinkankas, who is considered to have been " Mr. Gemology" to an entire generation of gemstone enthusiasts and collectors. This two volume set has become very difficult to find, and most often, individual volumes are offered. Incribed by the author to Robert Savoy. Bookplate of J.A. Freilich