Stone of good luck

From Ardrana

The stone of good luck, sometimes called a luckstone, is typically a bit of rough polished agate or similar mineral. Through its rather minor magic, its possessor is better able to avoid adverse happenings.

Note: This item originally appeared in the 2nd Edition Dungeon Master Guide for the Advanced Dungeons & Dragons game by TSR. Their inclusion here is for the purposes of providing context for the campaign only.