Orca agate is a type of agate known for its distinctive black and white banding, but the white layers can also have shades of cream, gray, or pale blue, reminiscent of an orca (killer whale).
 
It forms through a combination of volcanic and sedimentary processes, with alternating layers of chalcedony.
 
Believed to have healing properties, including grounding, promoting inner peace, and enhancing communication.