I think the name Sapphire is quite nice and unique~
I am a student at an international school. I will give you the names of some classmates as a reference:
Venessa (I really like this name), Shanon, Melissa, Tiffany, Julia, Mignon (pronounced Min-yon), May, Laurie, Ruby, Glacia, Adriana, Alicia, Serena, Jean, Teressa, Joycelin, Iris ( Rainbow means, I think it’s pretty), Kimberly, Kimmy (this one is pretty cute), Amelia, Camilla, Amanda.
I wish you good luck when you go abroad~