![](http://www.alamy.com/thumbs/6/478992C8-17BC-47D0-ADD5-43B98209B701/C2CDD4.jpg)
Smokey quartz (SiO2) from Furka, Switzerland
Size: 3887px × 2592px
Photo credit: © Shawn Hempel / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: background, black, brown, color, crystal, furka, mineral, quartz, raw, silicate, sio2, smokey, smoky, stone, switzerland, transparent, uncut