Seminar
Guest lecturer: Prof. Ruslan Kostov, D.Sc.
On February 25, 2026 (Wednesday) from 12 to 1 p.m. in Room 203 of the Geological Institute at the Bulgarian Academy of Sciences, a seminar will be held on the topic:
"Mineralogy and gemology of jade in our lands with a discussion of its origin"
Lecturer: Prof. Ruslan Kostov, D.Sc.
Everyone is welcome!