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Orthoclase — specimen 0478, photo © NMNHS
Orthoclase — specimen 0478, photo © NMNHS

Orthoclasespecimen 0478


South America
Orthoclase — specimen 0478, locality map

Weight: 1.67 ct; size: 12.48 | 4.41 | 3.71 mm; shape: octagon; colour: light yellow; very slightly brownish; clarity: eye clean; cut: good; treatment: none.

Very clean specimen; good step style cut.

Other specimens
Orthoclase — specimen 0259Orthoclase — specimen 0352

More information from ‘Classification’

A common feldspar of granites, granite pegmatites, and syenites; in cavities in basalts; in metamorphic rocks (Anthony et al., 2001—2005).