Amethyst, when used as a tool in practice, opens the third eye and crown chakra. It brings clarity in visualization and can bring meditation in a deep state faster. Know the stone that will be used in meditation before the practice. 

Understanding how the crystal connects with your mind and body is essential. Hold it in your hand and feel it, and hold it near both your heart and your third-eye and concentrate on it. Look at and focus on it in your hands before you begin.