When burning Karst Stone Paper, the paper does not smolder like traditional pulp paper. Errant sparks may leave a couple of marks, but they shouldn't spread. Karst Stone Paper is made from calcium carbonate (crushed stone) and a small amount of high-density polyethylene (HDPE) resin. No harmful gases are released when burning stone paper. However, it's essential to exercise caution and follow safety guidelines when burning any type of paper to prevent accidents or unintended consequences.