Cross pendants are given at the moments that matter in a family: a confirmation, a graduation, a deployment, a loss. They are worn for faith, and kept because of who gave them.
Styles here
Plain steel crosses — simple, hard-wearing, suited to men and boys
Crosses with stones — a little light, without being ornate
Engraved crosses — a date, a verse reference, or a name on the back
Choosing for a son or grandson
Steel on a short chain is the safest choice for a boy or teenager, since it survives daily life and looks right with everything. Gold reads dressier and suits an adult.
What to put on the back
A date and a name is enough. Many families use a verse reference rather than the verse itself, because it fits and because he will know it.