Project Gutenberg 2019-12-22 Public domain in the USA. 114 Smith, George Frederick Herbert 1872 1953 Smith, G. F. Herbert Gem-Stones and Their Distinctive Characters Produced by deaurider, Robert Tonsing, and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "Gem-Stones and Their Distinctive Characters" by G. F. Herbert Smith is a scientific publication written in the early 20th century. The book provides a comprehensive account of the physical properties of gem stones, aiming to equip readers with the knowledge needed for their identification and understanding. It details methods for assessing various characteristics like crystalline form, refractive index, and specific gravity, reflecting the author’s expertise connected to his role at the British Museum. The opening of the book presents a preface where the author articulates his intent to furnish readers with valuable insights into gem stones, focusing on their identification and scientific study. Smith highlights the evolving landscape of gemology, where an increased variety of stones and their imitations necessitate more refined identification techniques beyond simple visual assessment. He emphasizes that even novices can utilize the book effectively through clear explanations and diagrams, ensuring that both professionals and hobbyists can appreciate the beauty and complexity of gem stones. (This is an automatically generated summary.) en Precious stones QE Text Browsing: Nature/Gardening/Animals Browsing: Science - General 666148 666097 2024-10-17T01:04:49.441480 2023-09-26T07:31:54.656897 text/html text/html 639749 2024-10-15T10:00:00 text/html 7626867 2024-10-17T01:05:21.984324 application/epub+zip 7623957 2024-10-17T01:05:02.792416 application/epub+zip 340469 2024-10-17T01:04:53.970462 application/epub+zip 7773572 2024-10-17T01:05:37.335281 application/x-mobipocket-ebook 7687960 2024-10-17T01:05:20.038383 application/x-mobipocket-ebook 425684 2022-09-27T14:51:17.486915 application/x-mobipocket-ebook 504086 504234 2024-10-17T01:04:46.969468 2023-09-26T07:31:52.242883 text/plain; charset=us-ascii text/plain 484163 2024-10-15T10:00:00 text/plain; charset=us-ascii 19268 2024-10-17T01:05:37.653245 application/rdf+xml 13442 2024-10-17T01:05:01.208428 image/jpeg 1165 2024-10-17T01:05:01.116410 image/jpeg 177047 2019-12-21T17:06:30 application/octet-stream application/zip 6490383 2019-12-21T17:06:32 application/octet-stream application/zip 6506069 2024-10-17T01:04:49.837463 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia