Le talisman de Charlemagne: nouvelles découvertes historiques et gemmologiques
Le talisman de Charlemagne: nouvelles découvertes histo […]
Ruby heat treatment and fracture repair
Ruby heat treatment and fracture repair. Published in J […]
Sapphire from Andranondambo, Madagascar
first published in Facette 22 (February 2016) In 2 […]
Origin of gem corundum in calcite marble: The Revelstoke occurrence in the Canadian Cordillera of British Columbia
Origin of gem corundum in calcite marble: The Revelstok […]
Be-detection by FTIR on corundum; a preliminary report
Be-detection by FTIR on corundum; a preliminary report. […]
Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite
Some uncommon sapphire “imitations”: Blue Co-zirconia, […]
Saphirs de couleur fantaisie, diversité multicolore d’une gemme classique
Saphirs de couleur fantaisie; diversité multicolore d&# […]
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt eines klassischen Edelsteins
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt […]
Observations on treated ruby and sapphire
Observations on treated ruby and sapphire. Published in […]