The dancing octospiders locked me in one of their rooms!
Hint 1 of 7:
Yes, they did. There's no way to prevent this.
Hint 2 of 7:
The octospiders must carry around the jewels to all of the gates.
Hint 3 of 7:
Perhaps they dropped the one you need.
Hint 4 of 7:
Look carefully around the room.
Hint 5 of 7:
The jewel is behind the gate through which they exited the room.
Hint 6 of 7:
You can't reach through the opening of that gate, but you might have
something that can.
Hint 7 of 7:
You might even say you have someone that can.