Help to identify two hallmarks

Identifying & Discovering
1

My fathers ring from the late 60’s and a cuff I recently found

image.jpeg3264×2448 1.69 MB
image.jpeg3264×2448 1.69 MB
image.png2048×1536 3.61 MB
image.png2048×1536 3.24 MB

2

The ring I believe is by Jessie Thompson Navajo. The bracelet has me stumped. It looks like a stylized corn plant which could be Hopi or perhaps Zuni, but I can’t say for sure as I can’t reference it.