Please help me identify this jewelry

This jewelry belonged to my mother in law. My husband and I only know that it is Native American jewelry from what she told us. We would like to find out exactly what it is and what it is worth but I can’t seem to find anything like it online. The only hallmark on it looks to be a sailboat with the letters NALS engraved under it. Any insight is much appreciated.

Thank you for sharing, beautiful pieces. My first thought is the pieces are not Native American. What did she tell you to believe they are Native American?