The following information is extracted from The Book of Stones and other sources:
Crazy Lace Agate, also known as Mexican Crazy Lace Agate is a banded chalcedony (microcrystalline quartz) that is infused with iron and aluminum. Creamy browns, blacks, grays and golds (and occasional pinks or reds) swirl together creating complex patterns that make this a unique agate.
Agate has a hardness of about 7 on the Moh's scale. The name is derived from its occurrence at the Achates River in southwestern Sicily.
The Llewellyn Encyclopedia describes it thusly: "an attractive, white, opaque stone, patterned like a beautiful, multicolored paisley cloth. It is a cryptocrystalline quartz, found in Mexico." Although Crazy Lace Agate may be found throughout North America, the best specimens, in my opinion, are the ones found near Chichuhua, Mexico. I personally prefer and choose stones that have a lot of red in the mix as you will see in the photos below.
Below are a few of the Crazy Lace Agates I have wrapped.