Macro photograph of a sliced and polished Crazy Lace agate from Chihuahua, Mexico. The name 'crazy lace' is derived from the agates' banding patterns that resemble woven lace. It is a form of microcrystalline quartz that has been infused with iron and aluminum during its formation which is believed to have been during the Cretaceous period 65 to 90 million years ago.
Image #4704. Photo © copyright by Mark Windom.