Explains in non-technical terms how to use the dichroscope to identify colored gems, and how to separate natural gems from imitations, treated gemstones, synthetics, and look-alikes. The approach is direct and practical, and its style is easy to understand. With this highly accessible guide booklet, anyone can begin to master gem identification using the dichroscope.

Kategori: Bøger (usorteret)

Pris fundet i én butik til 69.95 kr

Opdateret den: 28-05-2023 10:41