Dal Shabet

Kelenor opened the third door, and behind it was a room with another door and a pedestal in the center, on which lay a black ring adorned with a dark ruby. Above the door was another diagram, even two. Apparently, it was necessary to use two symbols for each of them and then press the plate between them.
1. Heat, Dryness, Humidity, Cold
2. Wood, Fire, Earth, Metal, Water