What is blue lace agate? Agate is the same kind of rock as chert, but in a much purer, more transparent form. It consists of the mineral chalcedony. Agate forms from solutions of silica at relatively shallow depths and low temperatures, and is exquisitely sensitive to the physical and chemical conditions around it. It is commonly associated with the silica mineral opal. Blue lace agate is a light blue translucent stone with white or milky banding. What is blue lace agate? Agate is the same kind of rock as chert, but in a much purer, more transparent form. It consists of the mineral chalcedony. Agate forms from solutions of silica at relatively shallow depths and low temperatures, and is exquisitely sensitive to the physical and chemical conditions around it. It is commonly associated with the silica mineral opal. Blue lace agate is a light blue translucent stone with white or milky banding.
