While the primary reason one wears a symbol of one’s Catholicism should not be fashion, there is absolutely no reason why a piece of religious jewelry shouldn’t be beautiful and elegant. Think of the great cathedrals of the world, and their beauty. Then recall that St. Paul said that our bodies are temples of the Holy Spirit.
My late father, God rest his soul, was in the jewelry business after he retired from his engineering career, and taught me a few things about selecting jewelry. A certain piece can look stunning on one person, and tacky or silly on another person.
A few questions: Are you a man or a woman?
Do you have a yellowish or blue-ish skin tone? Check an area which does not ordinarily get tanned, such as the inside of your wrist, to determine the answer to this.
What is your general body build? Slight? Lean? More massive?
Sorry to say, but there are more choices for women than there are for men. It just seems that women tend to be more interested in variety. The more ornate crucifixes also tend to be worn by women, whereas the more rugged ones look well on men. Women also tend to look better in neck chains 18 inches or shorter, the longer, 22 to 24 inch chains look better on men.
Those who have more yellow-toned complexions look better in gold tones. Those with more blue-toned complexions look better in silver tones (or white gold.) The gold tone medals need not be prohibitively expensive, there are many choices in gold over sterling silver which is perhaps one tenth the price of a solid gold medal or crucifix.
A larger person looks better in larger scaled jewelry; conversely, the same scale would be overpowering on a smaller person. A crucifix that is less than 1 1/2 inches tends to look better on a smaller person, the two and a half inch ones look well on a larger person.
There are alternatives to crucifixes for Catholics: Consider a Miraculous Medal, a four-way medal, a medal of your patron saint, an ichthos pendant (fish–symbol for Christian,) a Holy Spirit pendant (shaped like a dove,) and many others.
One of my personal favorite pieces of jewelry is the one that was given to me by my godmother, God rest her soul, on the occasion of my First Holy Communion: It is a gold-framed crystal pendant containing a mustard seed. The box it came in bore the message: “If ye have faith as a grain of mustard seed, nothing shall be impossible unto thee.” That pendant, and the message it bore, has seen me through many trials.