A crystal can be stable.Logical formLearned from13 sentences. A long axis may pertain-to a crystal.Logical formLearned from13 sentences. Crystals can be isotropic.Logical formLearned from13 sentences. A (crystal sculpture) may pertain-to a female.Logical formLearned from13 sentences. Power may pertain-to a crystal.Logical formLearned from13 sentences. A (quartz crystal) can be clear.Logical formLearned from13 sentences. A series can be constituted-of-or-filled-with crystals.Logical formLearned from13 sentences. A crystal can be pretty.Logical formLearned from13 sentences. Crystals can be coloured.Logical formLearned from13 sentences. A sapphire crystal may be scratched.Logical formLearned from13 sentences. A name can be a crystal.Logical formLearned from13 sentences. A watch may feature a sapphire crystal.Logical formLearned from13 sentences. Crystals may be obtained.Logical formLearned from13 sentences. Clouds may be composed of (ice crystals).Logical formLearned from13 sentences. A dress can be with crystals.Logical formLearned from13 sentences.