Concentric rings in spheres of acicular quartz.
Photo under combined LW and MW-UV (both fluorescence photos) and under white light.
Locality: La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
Quartz owl
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Concentric rings in spheres of acicular quartz.
Photo under combined LW and MW-UV (both fluorescence photos) and under white light.
Locality: La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy