已对照游戏内数据、官方开发直播与补丁说明核验，
已针对 Preludes 15 人工核实。
crafting · Common
最低阶和弦石，Tuvalkane Cast 铸造配方：消耗 Quenching Acid、Whisprig、Dracs。Bond 等级限制；用于升阶合成 Whispering Chordstone。
P16 HF4 community patch transcription: Dungeon Rare Chests — added as a possible Chordstone drop; no per-chest guarantee or amount established. Historical forge lead: Cast at Tuvalkane forge in Nightfold — queue Hushed Chordstone in the Cast tab; gated by Bond level with Tuvalkane. Current Cast ingredients, quantities and gates need independent confirmation.
最低阶和弦石，Tuvalkane Cast 铸造配方：消耗 Quenching Acid、Whisprig、Dracs。Bond 等级限制；用于升阶合成 Whispering Chordstone。
P16 HF4 community patch transcription: Dungeon Rare Chests — added as a possible Chordstone drop; no per-chest guarantee or amount established. Historical forge lead: Cast at Tuvalkane forge in Nightfold — queue Hushed Chordstone in the Cast tab; gated by Bond level with Tuvalkane. Current Cast ingredients, quantities and gates need independent confirmation.
Tuvalkane Cast tab — recipe: Quenching Acid + Whisprig + Dracs — Bond-gated
Farm Quenching Acid, Whisprig & Dracs in Dermak Undercity / Glades loops as cast material prep
P16 HF4 community patch transcription: Dungeon Rare Chests — added as a possible Chordstone drop; no per-chest guarantee or amount established
同类别材料横向对比，便于判断稀有度与主要掉落来源。
| 物品 | 稀有度 | 主要来源 | 刷取路线 |
|---|---|---|---|
| 寂静和弦石当前 | Common | Tuvalkane Cast tab — craft with… | 有 |
| 琥珀灯石 | Rare | Dismantle: Sovereign weapon → Glow +… | 有 |
| 灵光灯石 | Rare | Dismantle: Legendary weapon → Glow +… | 有 |
| 灯石 | Rare | Dismantle: Noble weapon → Glow Lampyrite | 有 |
| 悠扬和弦石 | Rare | Tuvalkane Refine tab — refine Lilting… | 有 |
| 狂想和弦石 | Rare | Tuvalkane Refine tab — refine… | 有 |
| 和弦石 | Uncommon | Craft: Tuvalkane | 有 |
| 微光灯石 | Uncommon | Dismantle: Noble weapon → Glow Lampyrite | 有 |
| 轻快和弦石 | Uncommon | Tuvalkane Refine tab — refine… | 有 |
| 呢喃和弦石 | Uncommon | Tuvalkane Cast tab — up-cast from… | 有 |
| 混沌和弦石 | Epic | Historical one-time Preludes 15… | 有 |