polished magnesio-riebeckite (rhodusite) rock

bababudanite background blue closeup collection cut cutout decorative ferriglaucophane gem gemological gemstone geological isolated macro magnesian magnesioriebeckite mineral mineralogical natural object ornamental out pebble polished rhodusite riebeckite rock rolled sample specimen stone surface svidneite ternovskite texture torendikite torendrickite torendrikite tumbled white