Gemstone Encyclopaedia "Guide Voillot"

704 pages
Discover more than 300 gems described in meticulous detail.

Each stone is presented with its physical and chemical characteristics, its deposits, its fascinating history, care advice, as well as its use in jewellery and lithotherapy. You will also find information on the attribution of each stone to the astrological signs.

To enrich your experience, each entry contains QR codes leading to the films of Patrick and Maxime Voillot. These videos will let you explore the extraction sites and discover the supply chains in the different producing countries.

A dedicated app will help you easily identify each stone using various physical criteria such as hardness, density and refractive index.

Whether you are a beginner or a professional, this guide will become your essential reference for identifying and discovering the fascinating world of precious stones.