Krystalline \k-rystalli-ne, kryst(al)-line\ as a girl's name is a variant of Krystal and Krystalyn. See for origin and meaning of Krystalline.
The baby name Krystalline sounds like Krystaline and Krystalle. Other similar baby names are Krystine, Kristaine, Crystalina, Krystelle and Khrystalle.