Dear Emm:

Here is Canon Law pertaining to Priestly dress and deportment:

Can. 284 Clerics are to wear suitable ecclesiastical garb according to the norms issued by the conference of bishops and according to legitimate local customs.

Can. 285 §1. Clerics are to refrain completely from all those things which are unbecoming to their state, according to the prescripts of particular law.

§2. Clerics are to avoid those things which, although not unbecoming, are nevertheless foreign to the clerical state.

Can. 276 §1. In leading their lives, clerics are bound in a special way to pursue holiness since, having been consecrated to God by a new title in the reception of orders, they are dispensers of the mysteries of God in the service of His people.

Can. 282 §1. Clerics are to foster simplicity of life and are to refrain from all things that have a semblance of vanity.

There is no specific prohibition to wearing gold. Priest are to live simply, however, and void any semblence of vanity, as Canon 282 states.

Personally, I do not wear gold. The ring of my profession is sterling silver which is needed to avoid a green finger 

Since I have not seen this priest, there is no way for me to even begin to make a judgment, if I were to make a judgment. It is the responsiblility of that priest's bishop to deal with this, if there is indeed a problem.

Pray for him.

God Bless,
Bro. Ignatius Mary