Where did Diablo II Jordan Stone come from?

Jordan's Stone, with a grade of 29, is the skill enhancement ring with burka's Ring (matchmaking), while Jordan's Stone is most suitable for blue-consuming people such as wizards and necromancers, and 20% of them will enhance their magic, which should be released after ordinary Mefistofele, or the parliament can do it (Cui). It is generally recommended to play more BOSS, such as ordinary mephistopheles, Dior Pineapple (Diablo), Barr and Nightmare's Ann. ...