Optical and Luminescence Spectroscopy of Varicolored Gem Spinel from Mogok, Myanmar and Lục Yên, Vietnam

by Iveta Malíčková, Peter Bačík, Jana Fridrichová, Radek Hanus, Ľudmila Illášová, Ján Štubňa, Daniel Furka, Samuel Furka, Radek Škoda
Published 2021-02-01

Gem-Quality Green Cr-Bearing Andradite (var. Demantoid) from Dobšiná, Slovakia

by Ján Štubňa, Peter Bačík, Jana Fridrichová, Radek Hanus, Ľudmila Illášová, Stanislava Milovská, Radek Škoda, Tomáš Vaculovič, Slavomír Čerňanský
Published 2019-03-01

The REE-Induced Absorption and Luminescence in Yellow Gem-Quality Durango-Type Hydroxylapatite from Muránska Dlhá Lúka, Slovakia

by Peter Bačík, Jana Fridrichová, Ján Štubňa, Tomáš Bancík, Ľudmila Illášová, Helena Pálková, Radek Škoda, Tomáš Mikuš, Stanislava Milovská, Tomáš Vaculovič, Peter Sečkár
Published 2020-11-01