![](http://www.alamy.com/thumbs/6/97101C52-E87A-411F-8BEA-BCF82218409D/2DH84GJ.jpg)
a large colorful sample of stilbite with calcium and pyrite
Size: 3571px × 2289px
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