Forensic gemmological study of green-coloured beryl of variable origin

by Fridrichová, Jana, Bačík, Peter, Illášová, Ľudmila, Štubňa, Ján, Škoda, Radek, Milovská, Stanislava
Source: 1. Acta geologica slovaca AGEOS 1. Roč. 10, č. 2 (2018), s. 89–104 1. 1338-0044