Project Gutenberg 2019-12-22 Public domain in the USA. 398 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.) Reading ease score: 55.2 (10th to 12th grade). Somewhat difficult to read. en Precious stones QE Text Category: Science - Earth/Agricultural/Farming 666271 2025-07-24T08:50:55.264810 text/html 639749 2024-10-17T15:23:16 text/html 7626908 2025-07-24T08:51:11.226264 application/epub+zip 7623985 2025-07-24T08:50:58.920785 application/epub+zip 340492 2025-07-24T08:50:56.998801 application/epub+zip 7773286 2025-07-24T08:51:19.089168 application/x-mobipocket-ebook 7687966 2025-07-24T08:51:09.314220 application/x-mobipocket-ebook 425684 2022-09-27T14:51:17.486915 application/x-mobipocket-ebook 504086 2025-07-24T08:50:52.910834 text/plain; charset=us-ascii 484163 2024-10-17T15:23:16 text/plain; charset=us-ascii 15927 2025-07-24T08:51:19.276173 application/rdf+xml 13442 2025-07-24T08:50:57.166768 image/jpeg 1165 2025-07-24T08:50:57.083800 image/jpeg 6506099 2025-07-24T08:50:55.751815 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia