The Bonesmith and the Archivist both sell this exact same item. I could have sworn that the one the Archivist sold had different text at one point, indicating it could be used for Domination Shards. Since I was getting close to being able to buy the one from the Archivist, I went to check the cost and now the tooltip text reads the same as the item that the Bonesmith sells. It just says a generic ‘Shadowlands Season 2 item’ now.
Its just puts in a normal socket, not a domination socket.