collection of various minerals on gray background : cassiterite stones

rock cassiterite sample crystal specimen stone ore mineral white isolated geology matrix tin mineralogy crystalline mine pegmatite treasure oxide cluster hydrothermal peridotite piece polished prasiolite rough bolivia america tumbled various schorl ornamental gem natural south quartz gemstone jaspillite aggregate green decorative object metallic collage jaspilite turquoise vermarine gray copy space museum collection minerals background stones stones