"Hello traveller. I have a variety of rare and valuable items to trade if you're interested."
"It is known that the Elite Skeletal Warrior possesses a rare diamond stone. Bring me this diamond stone and I will trade you something in return."
You arrive back at the trader. "Do you have the diamond stone?"
"Excellent! Lets trade..." The trader hands you a ring. (You gain Ring of Gordlite and 300 xp.)