Gemmology
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Citrine — specimen 0207, photo © NMNHS
Citrine — specimen 0207, photo © NMNHS

Citrinespecimen 0207

Origin

South America
Brazil
Citrine — specimen 0207, locality map
Data

Weight: 5.55 ct; size: 13.10 | 8.76 | 8.14 mm; shape: octagon; colour: light greenish yellow; strong; clarity: eye clean; cut: excellent; treatment: none.
Notes

Probably irradiated rock crystal. Very clean specimen; angles [skipping after 45 in the crown] as in ‘Opposing Corners 15’ by Robert H. Long, excellent cut by Tan Pen.

Other specimens
Citrine — specimen 0065Citrine — specimen 0569Citrine — specimen 0413Citrine — specimen 0004Citrine — specimen 0367Citrine — specimen 0609Citrine — specimen 0184Citrine — specimen 0244Citrine — specimen 0568Citrine — specimen 0375Citrine — specimen 0470Citrine — specimen 0712Citrine — specimen 0241Citrine — specimen 0116Citrine — specimen 0710Citrine — specimen 0114Citrine — specimen 0074

More information from ‘Classification’


A yellow to yellow-orange or yellow-green variety of quartz. Natural citrine is very rare. Large quantities of amethyst, usually of lesser quality, are heated to turn it yellow or orange and sold as ‘citrine’.