🌐EnglishEnglishPolskiРусский中文日本語EntityQ3256437· pop 8· linked from 128 articlesperfect crystalcrystal formed without imperfectionsAvailable in 7 languages中文日本語РусскийCzechPolskiUzbekvia Wikidata sitelinks · CC0Connectionscrystallographic defectEntityatomEntityCategoriesCrystals