Oregon sunstone — specimen 0723, photo © NMNHS
Oregon sunstone — specimen 0723
Weight: 0.15 ct; size: 3.62 | 3.16 | 2.55 mm; shape: hexagon; colour: light reddish orange; very slightly brownish; clarity: eye clean; cut: excellent; treatment: none.
Very clean specimen; design ‘Hexamixtum S 41-32’ [pavilion angle changed to 45.00], excellent cut by Tan Pen.
More information from ‘Classification’
A feldspar with copper inclusions; has a composition of about 70% anorthite and 30% albite; occurs in Oregon, USA.