![](http://www.alamy.com/thumbs/6/93153093-A677-4E6C-8CE3-56F467DEEC1F/2HG92CW.jpg)
tourmaline mineral specimen stone rock geology gem crystal
Size: 3386px × 4411px
Photo credit: © Çağla Köhserli / Alamy / Afripics
License: Royalty Free
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