Kirtida details the quest once you accept it: "That request is from the connoisseur of stones. He seems to want a stone from B1F of the Golden Lair. It seems he saw a stone that glows red, like lava, and a stone that shines as bright as ice. They both sound highly unusual. Do you think you can indeed dig them up? Could you at least try...? Well, go with your confidence and I shall await your swift return."