SOCKET SYSTEM:

When modifying socketed items using a blacksmith, you will be able to do the following.

Upgrade:
You can upgrade a socketed item in order of its level one by one, such that if you have an Attack Prayer Stone at Level 3 in your weapon, you can use it to upgrade it sequentially to 4, then 5, then 6.

It costs 1.000.000 gold

Replace:
You can directly replace an item, skipping the requirement of increasing levels that the upgrade mechanism has. You can only replace an item of the same category, and there are two categories (chantra item, and normal item).

It costs 500 CC and their success rate is 100%.