Sunstone 2mm Faceted Cube - 15-16 Inch 16-inch Rounds It ranges from almost completely

It ranges from almost completely transparent to an almost opaque brownish to gray crystal

displaying these colors in patterns of parallel bands

Prehnite was the first mineral to be named after a person: its discoverer

It is known for its colors to to dark green and mustardy yellow

while today it is primarily mined in Africa

Sunstone 2mm Faceted Cube - 15-16 Inch 16-inch Rounds It ranges from almost completelySunstone, a variety of Feldspar, is aptly named for its shades of gold, orange, red and brown, as well as its iridescent sparkle. As the stone catches the light, inclusions of Goethite or Hematite refract the light between the layers of the crystal, producing the effect of the stone seeming to shine from within.