Edelsteinlexikon Part 2a, Andreas Stratmann

Edelsteinlexikon Teil 2a – From agate to corundum (ruby and sapphire) - only availble in German

This comprehensive work covers over 70 types of gemstones and minerals, arranged in an illustrated glossary for easy access by gemstone groups and alphabetically. Each gemstone type includes detailed descriptions, images, gemological data, and microscopic images for straightforward identification.

Part 2a addresses key questions on distinguishing synthetic and treated gemstones: How do synthetic Type IIa diamonds and HPHT-treated diamonds differ from natural stones? What are the identifying features of synthetic and treated rubies and sapphires? What defines Imperial jadeite jade, omphacite jade, and nephrite jade? These and other topics are thoroughly and practically explored.

The modern examination of each gemstone type is supplemented by visual representations of the following methods:

• VIS absorption spectrum to depict the visible color spectrum.
• UV-A fluorescence and absorption spectra for ultraviolet fluorescence analysis.
• N-IR spectrum for studies in the near-infrared range.
• Raman spectrum to determine molecular vibrations in the far-infrared range.
• X-ray fluorescence analysis to determine chemical composition, trace elements, and gemstone inclusions.

Part 2b complements the lexicon, covering gemstones from kyanite to zoisite.