Clear quartz is a power stone. Helps with concentration and increases awareness, inspiration and creativity. Purifies the spiritual, mental, and physical plans, bringing an aura of protection. Known as the master healer, it has the power to regulate energy.

Sashasrara - Crown Chakra - I understand

Amethyst has the ability to attract spiritual energies and provide peace of mind. Connecting with our Higher nature is the first step toward healing. Because it provides peace of mind, amethyst is a good stone to promote serene dreams.