This is not new that Johnny loves rings, I saw him once in a favorite jewelry store of mine in Paris buying rings of all kinds.

Here we see a silver ring (probably made in Iran and I've seen it sold quite often in the US) of Farvahar.

The Farvahar is one of the best-known symbols of Zoroastrianism, an Iranian religion. There are various interpretations of what the Faravahar symbolizes, and there is no concrete universal consensus on its meaning.

However, it is commonly believed that the Faravahar serves as a Zoroastrian depiction of the fravashi, or personal spirit.