Spiritual Stone of the Forest

The Spiritual Stone of the Forest, also known as the Kokiri's Emerald, is one of the three Spiritual Stones Link had to acquire in order to open the Door of Time during his adventures in Ocarina of Time. By relieving the Great Deku Tree of the evil which had infested it, Link proved his courage, leading to it entrusting Link with this stone and the fate of Hyrule.