Geoffray Riondet

He has taken part in the on-site gemmological analysis of numerous historic gems and jewelry pieces, including :

• Louis XIV’s “Grand Saphir” at the Muséum National d’Histoire Naturelle (2012),
• Charlemagne’s “Talisman” at the Palais du Tau (2016),
• Empress Josephine’s coronation ring at the Musée National des Châteaux de Malmaison et Bois-Préau (2016),
• the crown of Notre-Dame de Fourvière (2016),
• George Sand’s jewelry at the Musée de la vie Romantique (2017),
• the Majesty of Sainte Foy de Conques (2017),
• the Book of Hours of François Ier at the Louvre Museum (2020).

He is also renowned for his ongoing research, publishing numerous articles (over 70 to date) for magazines such as Revue de Gemmologie, Gems & Gemmology and The Journal of Gemmology.

Geoffray Riondet is also the author of the book “Bijoux anciens (1800 – 1950). Découvrir, apprécier et identifier”, published by Editions Flammarion in May 2021, with a foreword by Victoire de Castellane (Artistic Director of Joaillerie Dior).

The project was developed in partnership with the Institut National de Gemmologie and its professors (historians and gemologists). The book, now available in English since 2024, is entitled “Antique French Jewelry 1800 – 1950”.

Geoffray Riondet is a professor at the Institut National de Gemmologie. He also lectures at the Université Claude Bernard Lyon 1 as part of the Diplôme Universitaire de Gemmologie.