She is the goddess of sea monster what found in location city of crystal. So here's about that. Sapphire was found in the city crystal Island, she likes her friend, as cloud was like her joining with friend, he owes her friend Sephiroth. To this happen, while sapphire defeat Sephiroth. She found to the crystal city Island. A location was found to another Island. He also can tell about Sephiroth. As she found to the location. The city crystal Island was found to return with cloud and her friend. To meet her with sapphire. As sapphire he is a 30-year-old in the rising to return with the crystal city and can tell about the location. A return was teenage girl, the rising to the city of crystal. To return which was Support Materia. Doing to the necklace for Support Materia