GEMMOLOGY
These stones can be crystals, rocks or organic matter that grow naturally from the ground.
This discipline requires in-depth knowledge of geology, physics, chemistry and crystallography.
Gemmologists use specialised techniques to assess the quality and value of gems (natural stones), such as optics, measurements of hardness, density, colour, transparency and fluorescence.
They can also identify synthetic or treated stones, as well as imitations.
A skilled expert can identify the origin of a gem, including the region and mine, with the naked eye and a simple magnifying glass.
This fascinating field is accessible to everyone from a young age, as all it takes is the ability to observe and adopt a methodical approach.
Introductory courses and training programmes are offered regularly at the ING (Institut National de Gemmologie) and the Van Cleef & Arpels School.
Bibliography: Gemmes, Guide des pierres précieuses, Walter Schuman, Delachaux et Niestlé, 2024
Valérie Martin, a graduate in gemmology, is available to discuss this with you.