Smoky quartz — specimen 0719, photo © NMNHS
Smoky quartz — specimen 0719
Weight: 2.91 ct; size: 9.44 | 9.33 | 6.58 mm; shape: octagon; colour: dark reddish orange; clarity: eye clean; cut: excellent; treatment: none.
Very clean specimen; design ‘Petal’ 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.