Shadow (Black) How do you get TBC socket bonus?.Leveling Boosts As the level of a gem is increased, the cost in Flux and Gem Dust is increased, the chance to crack is increased, the chance for a successful level-up is decreased and the number of attempts until the Gem Karma triggers is increased. Each time you complete a greater rift, you will be able to upgrade the gem by a single rank, with 3 guaranteed chances at an upgrade if you complete the rift in time. Unlike normal gems, legendary gems can only be increased in power by upgrading them through Greater Rifts. What is the fastest way to level up legendary gems? If you’re not interested in getting the item back, you can salvage an item for the same result. It does cost gold, however, with more gold the higher the level of gem involved.
Yes, this is one of the Jeweler’s abilities.