African Green Jasper 10mm Round - 15-16 Inch R1086 Dumortierite is an aluminum borosilicate

Dumortierite is an aluminum borosilicate mineral that varies in color from blue

5x7 mm / 0

and as a source of colorful mother-of-pearl

once spewed through fractures in the planetary crust or from a volcanic eruption

African Green Jasper 10mm Round - 15-16 Inch R1086 Dumortierite is an aluminum borosilicateAfrican Green Jasper is a single to colored opaque stone, ranging in color from a deep olive green to a pale spring green with brown banding or stripes. It was highly prized in ancient cultures and associated with many positive properties, including gaining the title of the rain bringer for its perceived potency in coaxing showers from the heavens and quelling storms that threatened ships.