Quartz (Var: Prasiolite), Chalcedony (Var: Agate)
Płóczki Górne agate field, Płóczki Górne, Gmina Lwówek Śląski, Lwówek Śląski County, Lower Silesian Voivodeship, Poland
Natural prasiolite from Wielość, Płóczki Górne, in Lower Silesia, Poland. Collection Jerzy Cybulski, Poland. Size of the specimen 12.5 cm.
... and yes, this is a specimen already photographed by user1. He will forgive me ;-)
© Amir Akhavan