Smoky quartz — specimen 0204, photo © NMNHS
Smoky quartz — specimen 0204
Weight: 1.81 ct; size: 7.87 | 7.80 | 5.46 mm; shape: octagon; colour: dark reddish orange; clarity: eye clean; cut: excellent; treatment: none.
Very clean specimen; design ‘Eight’ by Glenn & Martha Vargas, excellent cut by Tan Pen.
More information from ‘Classification’
Smoky-grey, brown to black quartz coloured by Al-based and irradiation-induced colour centres.