![](http://www.alamy.com/thumbs/6/407074AF-2087-40E4-A581-A0A87C84A00C/DTGK19.jpg)
Amethyst
Amethyst is the purple variety of quartz (silicon dioxide) and is a popular gemstone.
Size: 2095px × 1537px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: amethyst, dioxide, gem, gemstone, mineral, purple, quartz, shot, silicate, silicon, studio, studioshot, tectosilicate