Carnelian pattern macro

Macro photograph of patterns in a cross-sectioned carnelian geode; carnelian is a variety of chalcedony, which is a variety of quartz; from Washington State

MLW2895abstractcarnelianchalcedonycloseupcrosssectiondetaildetailedfull framehorizontallinesmacromineralnatureorangepatternpolishedquartzstructureyellow