Photo by Jeff-O-Matic at https://secure.flickr.com/photos/jeff-o-matic/2124180634

Today’s agate is the Crazy Lace Agate. The complicated layers look like lace, hence the name. Since they are found in Mexico, sometimes they are called Mexican agates. It is not known exactly how they form, but perhaps they were disturbed somehow during silicification, creating the crooked layers.  You may recognize this photo if you visit our Google+ page; it’s one of my favorite mineral photos.