Two long crystals of quartz have the 'fenster' top, with some windows and are partially growth as an 'artichoke', for a curious effect.
Their surface is partially pseudomorphed in ortochlase.
It becomes from an old collection and is dated 1975, but there was not the exact locality.
Specimen weight:990 gr.
Crystal size:mm. 175
Overall size: 175mm x 105 mm x 55 mm
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