Identification of Amber Australian Gemstones Series Book 6【電子書籍】[ Trudy Toohill ]
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レビュー：0件This book contains a wealth of information on all aspects of amber, it’s appearance, diagnostic properties, common treatments and imitations. Designed for the beginner or experienced, it will greatly assist those wishing to find out more about how to correctly identify amber. There is information on the physical and optical properties of amber. There is also details on the correct readings for amber, from various gemmological instruments, such as ultra-violet light, refractometer, to name just a few, which will aid in accurate identification. This book will also prove useful to the gem fossicker in the field as it includes useful visual information which can also be used to determine correct identification.画面が切り替わりますので、しばらくお待ち下さい。
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