A jade amulet (u) can be created with level 34 Crafting by using a silver bar on a furnace while also carrying a cut jade and an amulet mould. This will grant 70 Crafting experience.
A ball of wool can be used on the unstrung amulet to create a strung jade amulet, which can then be enchanted at level 27 Magic using the Lvl-2 Enchant spell to create an amulet of chemistry.