Gold crystals on quartz - Jilove (Owl) near Prague, Bohemia, Czech Republic
#631 Ex Dietrich Huber collection
 
Particularly beautifully crystallized gold on quartz of up to 11 mm x 5 mm. The matrix is interspersed with other highly lustrous gold veins and crystals. 
Very nice collector's item from Europe from the very rare location "Owl" in the Czech Republic!
Gold on mother rock is the rarest form of the precious metal popular with collectors.