Colour change effects in gemstones: Causes and perception
Colour change effects in gemstones: Causes and percepti […]
Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite
Some uncommon sapphire “imitations”: Blue Co-zirconia, […]
Advancements in gemmological instrumentation over the last 30 years
Advancements in gemmological instrumentation over the l […]
Natural impregnation of a rock by copper minerals
Natural impregnation of a rock by copper minerals. Publ […]
Pierres précieuses A à Z: émeraudes, rubis, saphirs et autres
Pierres précieuses A à Z: émeraudes, rubis, saphirs et […]
Origin Determination of Gemstones: Challenges and Perspectives
Origin Determination of Gemstones: Challenges and Persp […]
Réglementation du commerce des gemmes
Les pierres précieuses de A à Z: Réglementation du comm […]
Les pierres précieuses de A à Z
Les pierres précieuses de A à Z. Published in revue de […]
Asterism in beryl, aquamarine and emerald- an update
Asterism in beryl, aquamarine and emerald- an update. P […]