Combat jewelry replaces the old method of gaining combat skills from unique items. On previous iterations, players had to decide which unis would best boost certain skills or regenerate life and mana. Combat jewelry looks to replace that system by automatically increasing the combat skill for whichever weapon you have equipped, and regenerating both life and mana.
There are 3 pieces of combat jewelry: ring, bracelet, and earrings. Each piece has 6 tiers it can achieve. In order to upgrade the jewelry, you will need three things: the item you are upgrading, 5,000 gold, and a glass shard. The glass shard can be obtained using the tinkering skill.
Each time you upgrade a piece of jewelry, it will have have a random stat roll. The higher the tier, the higher the roll.