“Perfect colorless crystal of datolite on yellowish prehnite. From an ancient discovery of the 1930s. Collection and photo of Gianfranco Ciccolini. Nikon D90, bellows, Schneider - Kreuznach Componon-S, 50mm, f 2.8. Focal used 4.7”
“Perfect crystal colorless of datolite on prehnite yellowish. From an ancient discovery of the 1930s. Collection and photo of Gianfranco Ciccolini. Nikon D610, bellows, Rodenstock APO Rodagon, 50mm, f 2.8. Focal used 5.6”