The Archaeological expert is a non-player character at the Digsite who is interested in the historical value of items which might be found there. Players can use items on him and he will tell them if there is any archaeological significance to the item. Players who bring him 3 gold nuggets will also receive 1 gold ore in return.
His real name is Terry Balando, named in the Desert Treasure quest, where he needs to translate an ancient stone tablet for you. If you speak to him while wielding an ancient staff, he says it is incredible, and comments on the Zarosian symbol.