While blue agate is readily available, it turns out the Blue Lace agate is actually rare due to the markings. Banded agates are layered silica-rich solutions that solidify and ultimately fill cavities. Geological events heat the initial agate that results in the curving of the layered bands. This deposit where Blue Lace agate is found is believed to date back approximately 54 million years. The Blue Lace agate comes from one specific mine in Nambia: Ysterputs. The mine ceased operations in 2017 and later closed in the 2000’s.