Waters can be sapphire.Logical formLearned from14 sentences. A sapphire crystal may be scratched.Logical formLearned from13 sentences. A watch may feature a sapphire crystal.Logical formLearned from13 sentences. Seats can be sapphire.Logical formLearned from12 sentences. A sea can be sapphire.Logical formLearned from12 sentences. A gem can be sapphire.Logical formLearned from11 sentences. An (engagement ring) can be sapphire.Logical formLearned from11 sentences. Windows can be sapphire.Logical formLearned from10 sentences. Hues can be sapphire.Logical formLearned from10 sentences. Earrings can be sapphire.Logical formLearned from10 sentences. A surface can be sapphire.Logical formLearned from9 sentences. A jewelry can be sapphire.Logical formLearned from9 sentences. Eyes can be sapphire.Logical formLearned from9 sentences. A (scratch resistant lens) can be sapphire.Logical formLearned from9 sentences. Features may include a sapphire crystal.Logical formLearned from9 sentences.