Divine Stone of Returning Soul

Divine Stone of Returning Soul (還魂の聖晶石 (かんこん せいしょうせき)) is one of a kind item in «Sword Art Online». It can be used to revive a recently fallen player. The item can be activated on the player's shortcut menu or by holding the materialized item and shouting «Revive ... Player Name». The effect will only work during the time frame between death of the player to the disappearance of item's effect light, which is approximately ten seconds. The only way known to obtain it was to fight Nicholas The Renegade, the Christmas event boss, during the Christmas Event and defeat him.

Kirito is the one who got the item in the hopes of bringing back Sachi, but learned about the ten second rule. Disappointed and depressed, he gave it to Klein, much to his friend's surprise.

Trivia

 * It is unknown if Klein had to use this item or not.

Piedra Divina del Alma Retornante