Crafting experience can be gained from cutting mined gems, crafting jewellery or making glass.
Gold bars are necessary to craft jewellery. A player can smith a gold bar by using a gold ore with a furnace. Gold ore can be obtained in large amounts from some NPCs, for example from Venenatis.
Glass-blowing is not a very fast and pretty expensive activity. It costs 4,565 coins for each molten glass.