Sappiteet

Could you clarify what Sappiteet refers to? Is it a medical term for gallstones in Finnish (likely sappikivet, with Sappiteet possibly being a misspelling or variant), a geological/mineral concept, a fictional or game-related term, or a proper noun such as a place or organization? Once I know the intended context, I can write a concise, neutral wiki-style article under 300 words.