The 岩浆石 is an 配饰 that drops from 熔岩蝙蝠s (2% chance) and 地狱蝙蝠s (0.67% chance) found in The 地狱. It causes your melee attacks to inflict the 着火了！ Debuff on enemies, and also gives a red flame particle effect that lights up whenever you swing a weapon. Each melee attack has a 14% chance to cause 3 seconds of burning, 29% chance to cause 2 seconds, and 57% chance to cause 1 second.
- Despite the tooltip not specifically saying so, the fire effect only works on 近战武器, including 工具 that inflict 近战伤害 such as 镐, 斧头 and 锤.
- 熔岩蝙蝠s have a 3x higher chance of dropping this item, so farming it in 困难模式 is easier than in Pre-Hardmode.
- Placing any block or using a 魔镜 with a Magma Stone equipped will cause the player to emit flame particles, but the player won't be set on fire.
- Despite being throwing damage the damage dealt by the 骨头标枪 while stuck in an enemy applies the fire effect.
- The 标枪 is also improved by this accessory.
- The Magma Stone is very deadly when combined with 寒霜盔甲, 诅咒焰瓶 and any energy beam sword like 原版断钢剑 due to being able to inflict the 霜冻, On Fire!, and 诅咒地狱 debuffs, increasing the damage over time.
- This accessory is very useful against bosses who summon minions to fight for them.
- Using the Magma Stone with any yo-yo is useful for quickly mapping out underground caverns.
- 1.2.3：Fixed issue where Magma Stone fire particles would apply to 虫网.
- 1.2.1：Magma Stone will no longer show a fire effect for non melee weapons.