Practical Gemmology

Practical Gemmology pdf epub mobi txt 电子书 下载 2025

出版者:Trafalgar Square
作者:Webster, Robert
出品人:
页数:216
译者:
出版时间:1993-11
价格:$ 28.24
装帧:HRD
isbn号码:9780719801310
丛书系列:
图书标签:
  •  
想要找书就要到 图书目录大全
立刻按 ctrl+D收藏本页
你会得到大惊喜!!

"Practical Gemmology" has for decades been recognised as the standard work for those learning how to identify gems and ornamental minerals. It is recommended by educational authorities as a course textbook; it is also particularly suitable as a self-instructor for those entering or hoping to advance in the jewellery and gem trades, or for the keen amateur. The twenty-one sections comprise notes on the formation of gem materials and an additional chapter on the chemistry of gemstones. A section on luminescence and electrical effects that brings a more modern approach to this part of the subject. More information is given on the inclusions seen in gemstones and the newer synthetic stones are discussed. Increased coverage is given to the types of modern methods of colouring diamonds artificially. The methods used in cutting gemstones and details of more of the unusual gemstones now cut and polished are also discussed.

具体描述

读后感

评分

评分

评分

评分

评分

用户评价

评分

评分

评分

评分

评分

本站所有内容均为互联网搜索引擎提供的公开搜索信息,本站不存储任何数据与内容,任何内容与数据均与本站无关,如有需要请联系相关搜索引擎包括但不限于百度google,bing,sogou

© 2025 book.wenda123.org All Rights Reserved. 图书目录大全 版权所有