Quartz with Fe-Mn oxides

Banská Štiavnica (Schemnitz), Banská Štiavnica District, Banská Bystrica Region  Slovak Republic (2009)

Specimen size: 11.5 × 6 × 4 cm = 4.53” × 2.36” × 1.57”
Main crystal size: 1.1 × 0.3 cm = 0.43” × 0.12”