July 16, 2025 3:06 AM (GMT+2) I’m certain that they can be lit, see Drafting Strategy (Vol. 4):

However, I don’t think I have yet come across any item that can produce a flame.

July 24, 2025 1:56 AM (GMT+2) I lit up the candles using the Burning Glass and revealed a secret path that connects The Precipice with the Abandoned Mine. Mystery solved.