Quartz - Siena Province, Italy - 21 x 21 mm; 15 x 14 mm
Mineral: Quartz
Locality: Abbadia San Salvatore, Siena Province, Tuscany, Italy
Dimensions: 21 x 21 mm; 15 x 14 mm

Description: Loose crystals with a pseudo bipyramidal habit (prism is absent).