Smoky quartz — specimen 0401, photo © NMNHS
Smoky quartz — specimen 0401
Weight: 4.20 ct; size: 11.06 | 8.93 | 6.11 mm; shape: octagon; colour: dark reddish orange; clarity: eye clean; cut: good; treatment: none.
Clean specimen; good step cut style.
More information from ‘Classification’
Smoky-grey, brown to black quartz coloured by Al-based and irradiation-induced colour centres.