The spelling of the word "Crystle" is incorrect. The correct spelling is "Crystal," which is pronounced /ˈkrɪstəl/ (KRISS-tuhl) in IPA phonetic transcription. The first syllable is stressed, and it sounds like "criss." The second syllable is pronounced "tuhl," which rhymes with "hustle." Crystal refers to a translucent, colorless mineral or glass that is often used in jewelry or decorations. It can also be used to describe something that is clear or pure.