I have not found any references so far for as to whether there are crafting areas for jewellery. I can see from certain items I have picked up (mainly rings) that they have attributes similar to some armour and weapons (robust, sturdy, etc) which might indicate that you can research those traits for creating similar items. I have also noticed I am unable to enchant the jewellery I have collected at the moment, yet jewellery enchantments exist so it must be possible to add them to created items? maybe?
Is there anyone out there that can shed any light on this puzzle?