Jean-Pierre Gauthier (1) & Martial Bonnet (2) DOI : 10.63000/gQ6XF78wb5 Abstract THE PEARLS OF SAINT-GINGOLPH – A short history reports on the manufacture of « Perles du Lac » in Saint-Gingolph (Switzerland), produced from 1920 until the workshops closed in 1974, then resumed in 2020. The basic materials are essentially a solid glass core, covered with fine […]
Charline Coupeau (1) & Marie Chabrol (2) DOI : 10.63000/mX7zMA958i Abstract THE INTIMATE LIFE OF STONES – A Through the study of ancient and contemporary texts, this study shows that the links between sexuality and mineralogy are more tenuous than one might think at first glance. Throughout History, human being has felt a form of […]
Marie Chabrol (1), Maxence Vigier (2), Emmanuel Fritsch (2) & Jean-Pierre Gauthier (3) DOI : 10.63000/8SWAV6GF53 Abstract IMITATIONS OF AQUAMARINES EXHIBITING A « HAIRY » ALTERATION – A batch of 5 samples, sold in 2010 as a set of aquamarines in Madagascar, caught the eye of our team. Although these stones were kept in a safe away […]
Jean-Pierre Gauthier (1), Jacques Fereire (1) & Stefanos Karampelas (3) DOI : 10.63000/P4QF7CM88Y Abstract TRAPICHE-LIKE INCLUSION IN AN OBSIDIAN FROM JALISCO, MEXICO – A cabochon-cut obsidian from Jalisco, Mexico, shows two white spherulitic inclusions on the surface, one of which was sectorized into four domains, the other into six, thus simulating a trapiche structure. This […]
C’est avec beaucoup de fierté et de joie que nous vous annonçons la sortie du quatrième numéro de la revue GEMMES. Au sommaire de ce numéro, vous retrouverez les contributions de Féodor Blumentritt, Aurélien Delaunay, Éloïse Gaillou, Charline Coupeau, Marie-Laure Cassius-Duranton, Marie Chabrol, Maxence Vigier, Franck Notari, Clara Allirol-Mouton, Stefanos Karampelas, Emmanuel Fritsch, Chloé Picard, […]
Depuis plusieurs éditions, l’Association Gemmologie & Francophonie anime des tables rondes au sein du salon GemGenève sur des sujets d’actualité. Pour cette édition de mai 2024, nous vous proposerons une discussion sur les diamants et pour cette fois-ci, elle sera animée en anglais. Le diamant se présente sous des formes et des conditionnements différents. Que […]
Au cours de ces deux dernières années, l’industrie du diamant a dû bouleverser son approvisionnement en raison du conflit entre l’Ukraine et la Russie. Dans cette optique, l’association Gemmologie & Francophonie vous accueille lors de GemGenève pour une nouvelle séance de travail le samedi 11 mai de 17h à 18h30 dans l’espace « Talk ». Ce n’est […]
Gemmologie & Francophonie Abstract Buying an antique piece of jewelry is – often – buying a piece of history and sometimes even a fragment of the History. Sentimental, historical and even financial value are often associated with the notion of lifespan. And yet, the materials used for jewelry are sometimes less precious than the contemporary […]
Aurélien Delaunay (1), Emmanuel Fritsch (2) & Ingrid Lerouyer (3) DOI : https://doi.org/10.63000/6zwK85TXb7 Abstract In a batch of variscite, one sample stood out because of its slightly different color and texture. Laboratory analysis showed that it is an antlerite, Cu3(SO4)(OH)4 a rare mineral that is generally better known in mineralogy than in gemology. This specimen […]
Stéphane Renard (1) DOI : https://doi.org/10.63000/dV5c4fH4R2 Abstract The art of stone or gem engraving was invented at the dawn of civilizations. It has played an essential role in the history of art and culture from its start to nowadays, evolving over the centuries to become a means of artistic expression.The earliest forms of glyptic art […]
