Blackstar Citadel, also known as Kingston Citadel, is located in Kingston which lies in the southern foothills of the Low Bleaks; southeast of Halfwind Citadel. It's emblem is a shield split in two: the left side features a large green diamond surrounded by a circle of nine smaller red diamonds, while the right side shows a single black star.

As part of Kingston, Blackstar Citadel has long been ruled over by the family of Blackstar, beginning with Fleck Blackstar down to his descendant Lord Victor.