natural amethyst at the wanda mines, argentina.

amethyst crystal mineral argentine water natural purple stone quartz gemstone jewelry violet geology healing color closeup gem macro rock rough raw texture geological precious colorful nature pattern background mineralogy jewel transparent beautiful detail rare semiprecious white druse structure decoration gemology fossil pebble shiny pink formation misiones geologic material lilac crosssection volcanic cave round centric pretty marble history pyrite caving mineshaft caves travel