Oregon sunstone — specimen 0008, photo © NMNHS
Oregon sunstone — specimen 0008
Weight: 0.72 ct; size: 7.09 | 4.96 | 3.64 mm; shape: oval; colour: medium light very slightly bluish green; slightly greyish; clarity: eye clean; cut: excellent; treatment: none.
More information from ‘Classification’
A feldspar with copper inclusions; has a composition of about 70% anorthite and 30% albite; occurs in Oregon, USA.