Quartz (variety amethyst) with Prehnite, Quartz and Calcite

Goboboseb Mountains, Brandberg area, Erongo Region  Namibia

Specimen size: 7 × 6.3 × 5.3 cm = 2.76” × 2.48” × 2.09”
Main crystal size: 6.4 × 2.3 cm = 2.52” × 0.91”