Beryl (Butterworths Gem Books)

SINKANKAS, John

Read, Peter G.

Science & Math

Butterworth-Heinemann

A complete guide to gem cutting for amateurs. Includes chapters on sawing, grinding and lapping, sanding and polishing, cabochon gems, faceted gems, and more.

Gem Cutting a Lapidarys Manual Edition

Crafts, Hobbies & Home

Crafts & Hobbies

Van Nostrand

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

Gemstones of North America

Van Nostrand-Reinhold

This catalog contains a wealth of detailed precise information accumulated from the author's vast experience in lapidary work and gemology. Presented here for the first time is a systemic analysis of the factors involved in the evaluation of gems, cut and rough, including caarvings and ornamental objects, pearls, and other organic substances used for ornament. Helpful photos and diagrams of gems illustrate cutting styles, and explain good and bad features in gems which the prospective buyer must look for. This book is written for amateur lapidaries, gem collectors, museum buyers, etc, but also will be of value to all jewelers needing a reference work; Hardcover.

Van Nostrand's Standard Catalog of Gems

Van Nostrand-Reinhold Co.

Product description is in the TITLE~

Gemstone & Mineral Data Book: A Compilation of Data, Recipes, Formulas, and Instructions for the Mineralogist, Gemologist, Lapidary, Jeweler, Craftsman and Collector

Discusses the human factors involved in gem evaluation, presents supply and marketing information, and offers listings of current cut and rough gemstone prices

The term gemcutting is used to describe the process of shaping and polishing faceted gemstones. The artisan undertaking the cutting can also be called a lapidary.While the gemstone in the rough state may be trimmed to remove undesirable material or to separate it on a cleavage line with a diamond bladed saw, accurately described as cutting and once done by the use of a chisel or similar tool to simply break off pieces that were usable as single gemstones.The actual shaping and polishing of a gemstone is a grinding or sanding process. This grinding and sanding is done using a lap, a precision metal plate embedded with grit similar to the more familiar embedding of grit on paper the lap is of high precision particularly for flatness and turned by a motor. (See faceting equipment) The grit material is normally diamond and sometimes corundum for their hardness. Only diamond is hard enough on the Mohs scale to shape and polish a diamond.The initial shaping and facet placement may be done using laps with the more familiar grits of 220, 600, 1200. The polishing step, however, requires grits that are less familiar 8,000 14,000 50,000 and even 100,000. This grit is also embedded into a metal lap, but sometimes applied manually to the lap during polishing.

Gem Cutting

Reference

Van Nostrand Reinhold Company

Emerald and Other Beryls

Earth Sciences

Chilton Book Co.

Very slight signs of age or use to book and DJ, Unique compilation in one handy book, hard to find data, formulas, compounds, tables, properties, instructions on cleaning and preserving for over 1000 mineral species for gemologists, jeweler and collector, etc.

Gemstone & Mineral Data Book: A Compilation of Data, Recipes, Formulas and Instructions for the Mineralogist, Gemologist, Lapidary, Jeweler, Craftsman and Collector

Winchester Press

Field Collecting Gemstones and Minerals

Nature & Ecology

Geoscience Pr

See the best price to sell, buy, or rent books by SINKANKAS, John. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by SINKANKAS, John

See the best price to sell, buy, or rent books by SINKANKAS, John. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Beryl (Butterworths Gem Books)

Gem Cutting a Lapidarys Manual Edition

Gemstones of North America

Van Nostrand's Standard Catalog of Gems

Gemstone & Mineral Data Book: A Compilation of Data, Recipes, Formulas, and Instructions for the Mineralogist, Gemologist, Lapidary, Jeweler, Craftsman and Collector

Van Nostrand's Standard Catalog of Gems

Gem Cutting

Emerald and Other Beryls

Gemstone & Mineral Data Book: A Compilation of Data, Recipes, Formulas and Instructions for the Mineralogist, Gemologist, Lapidary, Jeweler, Craftsman and Collector

Field Collecting Gemstones and Minerals