Dumortierite 4mm Round AAA Grade - 15-16 Inch Stone Type_River Stone where copper contributes to blue

where copper contributes to blue tones and iron introduces green variations

These include annite

there may not be a beautiful blue-and-brown combination than that of Terra Agate

A form of chalcedony made of quartz

and bold black spiderweb matrix—creating highly distinctive

Dumortierite 4mm Round AAA Grade - 15-16 Inch Stone Type_River Stone where copper contributes to blueDumortierite is an aluminum borosilicate mineral that varies in color from blue, green and brown to the more rare violet and pink. First described in 1881, the mineral was named for French paleontologist Eugene Durmortier (1803 to 1873). It is believed to bring the wearer water energy and to promote flow, control and orderliness.