Jewelcrafting is one of the crafting professions that you can level up. This crafting profession mainly makes use of some Mining and items obtained through orbs, such as upgraders and spell crystals, in order to create more powerful upgrading and spell crystals, as well as soul scroll unlockers.
In order to access the Jewelcrafting bench, just head towards the Crafting teleport, at the mainland city temple, like shown in the image. After going in the teleport, simply head to the left and you will be at the Jewelcrafting bench.
Interacting with the Jewelcrafting bench will open up a window that will contain all of the possible recipes available to craft, as well as the necessary materials for each recipe. Every recipe requires a variant amount of BlackTalon Coins, the server's main currency.
Aside of having a material cost, recipes will also have a minimum crafting skill required to actually complete that recipe, which means that as you craft anything inside Jewelcrafting, you will get experience towards the Jewelcrafting skill. You can see your current crafting skills progressions through the character info panel, like shown in the image to the right.