Sylvia answered Pylia, "It hasn't said anything yet," She carefully watched the spirit for any sign of communication. The only thing she got was the spirit looking to the gemstone before looking back to her. She then heard Pylia's suggestion and answered "Maybe. I'll give that a shot," The only question was what did it consider to be of equal value to the gemstone? How valuable was the gemstone to it in the first place? 

She then fished through her backpack. She decided to try something simple first. Maybe the spirit would like one of her throwing knives? She took out the throwing knife and held it in her palm so as to not appear threatening, and held it out towards the spirit in an offering motion.