Help identifying artist and tribe

Greetings all!
Looking for some help on this sunface necklace. The seller said it was Zuni but I think it’s Navajo. It’s signed F and there are a lot of artists with that initial so it’s hard to narrow it down.
Please let me know if you know who this is and if you think it’s Navajo or Zuni.

The sunface is associated with the Zuni people, not Navajo. However, this is not Zuni style, more Navajo. The craftsmanship is that of a beginner.