The Ice Diamond (Rescue Princesses #10‪)‬

These are no ordinary princesses--they're Rescue Princesses!Princess Maya is delighted to welcome the Rescue Princesses to the Kingdom of Lepari. It's a beautiful land, where the King has sworn to protect the rare snow leopards that live in the mountains. Maya and her new friends are devastated to learn about a secret plan that will harm the leopards. The girls want to save them, but first they must convince the Lepari royalty that the leopards are really at risk!