![](http://www.alamy.com/thumbs/6/9BAD1C61-4FE4-4381-839A-CD5C3FC4D7E2/B8F3T7.jpg)
Gypsum crystal twin.
Size: 5200px × 3453px
Location: USA
Photo credit: © GreenSc / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: calcium, caso4·2h2o, clear, close-, closeup, collection, crystals, evaporite, form, geology, gypsum, mineral, mineralogy, nature, perfect, science, selenite, specimen, sulfate, transparent, twin