This book serves as a practical guide for identifying authentic French cameo glassware from the Art Nouveau period. It aims to equip collectors with the knowledge to distinguish genuine pieces by renowned makers like Gallé, Daum, and Schneider from forgeries, altered items, and 'marriages' of different parts. The guide utilizes over 550 photographs to illustrate these distinctions, employing a visual coding system of green dots for authentic items and red triangles for those that are not.

This guide is designed as a practical resource for collectors of French art glass, specifically focusing on the works of Gallé, Daum, and Schneider. The inclusion of over 550 photographs, coupled with a clear visual system for identifying authentic pieces versus fakes or altered items, suggests a thorough and visually-driven approach. The book aims to provide essential insights for navigating the complexities of the art glass market and avoiding common pitfalls. Its multilingual summaries indicate an effort to reach a broader international audience of collectors and enthusiasts.