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Citrine — specimen 0065, photo © NMNHS
6.59 | 6.50 | 4.02 mm;
medium reddish orange; strong;
Probably heated amethyst. Very clean specimen; excellent brilliant style cut. Source: Jeffery Davies,
Jeffery Davies Fine Jewelry & Gemstones
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’.
Gemmology — gemstones
National Museum of Natural History, Sofia
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.