A gem can be crystalline.Logical formLearned from2 sentences. A player may win a gem.Logical formLearned from2 sentences. Gems may be used for purposes.Logical formLearned from2 sentences. A gem may take a name.Logical formLearned from2 sentences. Gems can be colorless.Logical formLearned from2 sentences. A gem may be cuted from a crystal.Logical formLearned from2 sentences. A gem may undergo a cutting.Logical formLearned from2 sentences. Gems may have a luster.Logical formLearned from2 sentences. Gems can be of origin.Logical formLearned from2 sentences. Gems can be alien.Logical formLearned from2 sentences. Gems may undergo concentrations.Logical formLearned from2 sentences. Lines of gems may rise_up from a bottom of a screen.Logical formLearned from2 sentences. Gems may break.Logical formLearned from2 sentences. Players may collect gems.Logical formLearned from2 sentences. Gems may undergo a placement.Logical formLearned from2 sentences.