Can contain the consciousness of somebody in suspension, have it locked within an item of interest.
It's somebody's memories, is what their "souls" can be done. This is the second time that a human be placed within an object.
Golemancers keep them secret, ever since the skirmishes of rogue wars against the glitz hub Royal families.
They can be contained with lucky charms, sold at flea markets. Little nick knacks and accidents can happen, especially with deaths most undeserving. Black market goods that are traded and receive a high price. Yet counterfeit item are made, only a Golemancers can tell a real one from a fake by performing an identification charm.
Golems will to keep it close to them as jewellery, trinkets. Since they have a connection, their consciousness can be recovered if they die close to it.
So it's a part of their power, showing that they are most effected by the other-wave.