Binghamite — specimen 0317, photo © NMNHS
Binghamite — specimen 0317
USA, Minnesota, Crow Wing County, Cuyuna
Weight: 1.61 ct; size: 10.85 | 6.55 | 3.17 mm; shape: hexagon; colour: medium dark reddish orange; very slightly brownish; clarity: opaque; cut: excellent; treatment: none.
Clean specimen; design ‘Hexaelongatis Cab 1’, excellent cut by Tan Pen.
More information from ‘Classification’
A variety of chalcedony with inclusions of goethite