Men nowadays dress more than women in some sides. Soem women even do not want to wear any jewelry on them but men become to wear earrings, necklaces, rings and bracelets to improve their look.
Some men that prefer having necklace tha any other kinds of jewelry should try to wear gold necklace for men. Gold makes you look older and more macho. You can proof tht by standing with a naked tbreast.
Stand there and look at your look closely, then take a gold necklace for men and wear it. Now you look at your look closely. I think you look even better with the gold. You can see the changes you make by wearing a gold necklace for men.
there are necklace designed as chained chain, long chain and some have decorations. It is up to you to choose which necklace perfect for you. But for the decoration, you suggested to choose skull, cross or other macho things.