Smoky quartz — specimen 0682, photo © NMNHS
Smoky quartz — specimen 0682
Weight: 0.45 ct; size: 5.76 | 5.00 | 3.32 mm; shape: hexagon; colour: dark reddish orange; clarity: eye clean; cut: excellent; treatment: none.
Very clean specimen; design ‘Hexamixtum S 41-32’, excellent cut by Tan Pen.
More information from ‘Classification’
Smoky-grey, brown to black quartz coloured by Al-based and irradiation-induced colour centres.