Dumortierite 12mm Coin 8-Inch tucson_2024_week_2 this semi to precious variety

this semi to precious variety of quartz is found in many locations around the world

is aptly named for its shades of gold

periwinkle

Spinel is a hard vitreous magnesium aluminum oxide

Quartz has been highly valued by virtually every civilization throughout history

Dumortierite 12mm Coin 8-Inch tucson_2024_week_2 this semi to precious varietyDumortierite 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 1873). It is believed to bring the wearer water energy and to promote flow, control and orderliness.