Gemmology
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Amethyst — specimen 0675, photo © NMNHS
Amethyst — specimen 0675, photo © NMNHS

Amethystspecimen 0675

Origin

no locality data
Data

Weight: 0.74 ct; size: 6.82 | 5.91 | 4.15 mm; shape: hexagon; colour: light violetish blue; strong; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘Hexamixtum S 41-32’ [pavilion angle changed to 45.00], excellent cut by Tan Pen.

Other specimens
Amethyst — specimen 0676Amethyst — specimen 0678Amethyst — specimen 0679Amethyst — specimen 0681Amethyst — specimen 0703Amethyst — specimen 0706Amethyst — specimen 0467Amethyst — specimen 0085Amethyst — specimen 0612Amethyst — specimen 0344Amethyst — specimen 0402Amethyst — specimen 0224Amethyst — specimen 0368Amethyst — specimen 0091Amethyst — specimen 0193Amethyst — specimen 0199Amethyst — specimen 0232Amethyst — specimen 0169

More information from ‘Classification’


A violet variety of quartz. The colour is caused by iron impurities in the 10s to 100s parts per million range.