जेम्स और रॉक्स
गगन चौधरी की किताब “जेम्स और रॉक्स” (हिंदी में) उन सभी के लिए है जो जेमस्टोन खरीदते हैं, बेचते हैं, या फिर केवल उनके बारे में पढ़ते हैं | शानदार फोटोग्राफ्स और आसान भाषा के कारण यह कलर्ड जेमस्टोन्स पर इस तरह की पहली किताब है, जहाँ गगन चौधरी ने जेम टेस्टिंग लेबोरेटरी (जयपुर) में अपने सालों के अनुभव को बाँटा है |
UNDERSTANDING ROUGH GEMSTONES
This book has been written so as to cover every aspect of rough gemstones. While initially, the authors focus on the fundamentals of gemstone rough- evaluating, sorting and buying, they then, literally, take you across the globe. First, as they explore the gem stone deposits in each nook and cranny of India, and then as they draw attention to the prominent gem deposits in the world. Be it Orissa or Chile, it has been covered by the authors. They have addressed the issues of synthetics and treated rough, a growing concern in the Industry, in a unique fashion- not only by explaining the methods of identification but also by including interesting anecdotes about their experiences with synthetic stones.
THE SCIENCE OF GEMSTONE TREATMENT
This book is a user’s guide for gemstone enhancement. It discusses the ‘why’ of gemstone treatment followed by ‘how’ in simple and practical ways. The book explains the basics of the causes of colour and optical phenomena and the role of the chemical composition of the stones and their impurities, followed by detailed descriptions of various enhancement processes like heat treatment, irradiation treatment, fracture filling/ impregnation, dyeing, stabilization, coating on gemstones, etc. are given.
The book describes in detail, the identification of treated gemstones with basic gemmological tools as well as with advanced spectroscopic tools, followed by their disclosure policy being followed by various trade organisations.