How do you get the three stones in Zelda ocarina of time?

The Kokiri Emarald is given to you once you complete the quest inside the Great Deku Tree. The Goron Ruby is given to you once you defeat King Dodongo in Dodongo's Cavern on Death Mountain. The Zora's Sapphire is given to you once to complete the quest inside Lord Jabu-Jabu in Zora's Domain.