pyrite from the alpstein mountain or pyrit aus dem alpstein massiv minerals and crystals in the exhibition mount säntis

agate ammonite aus background beautiful bliss bright calcit calcite chlorit chlorite closeup colorful crystals dem detail eingewachsenem environment exhibition experiences explore extinct gastern gasterntal gem gemstone geological geology glossy grunge intergrown interior isolated luxury macro marble matt mine minerals mit mollusc mount natural nature old onyx park pattern precious quartz quarz raw rock rough royal rustic rutil rutile santis schweiz shiny slab stone stones summit switzerland texture tiles translucent uncut valley wall wallpaper worlds