![](http://www.alamy.com/thumbs/6/7A7AAA57-1742-43F4-A9EF-72B699939DF9/2F3J6KX.jpg)
a large sample of stilbite with calcium and pyrite
Size: 4033px × 2350px
Photo credit: © WireStock / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: agate, apophyllite, chalcedony, conglomerates, copper, crystal, crystals, desmin, gem, gemstone, geological, geology, jasper, jewel, jewelery, jewelry, manufacturing, mineral, mineralogy, natural, nature, ore, precious, quartz, rock, science, sectility, semiprecious, silicate, smokey, specimen, stalactite, stilbite, stone, uncut, unpolished, valuable