Mineral: Quartz (variety smoky)
Locality: Triolet Glacier, Ferret Valley, Les Grandes Jorasses Massif, Courmayeur, Aosta Valley (Val d'Aosta), Italy
Dimensions: 43 x 26 mm
Description: At the bottom of the same M face, on the opposite edge, an etched (for chlorite dissolution?) and quite big S face.
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