Magical Sapphire is the sentient magical wand and partner of Miyu Edelfelt in Fate/kaleid liner Prisma☆Illya. She serves as a support familiar and transformation tool, helping Miyu fight as a magical girl. Sapphire is calm, intelligent, and often more composed than her counterpart Ruby, though she can also be playful and teasing. In the series, she plays an important role in guiding Miyu through battles, providing magical assistance, and contributing to the story’s magical girl dynamics and comic interactions.