Sizes and shapes are approximate and vary.
Amethyst is a purple variation of quartz crystal. Amethyst symbolizes balance and inner peace. This stone is commonly used in mindfulness practices or meditation since many people believe Amethyst contains calming benefits. These healing properties have been used since Ancient Greece since the name Amethyst originates from the ancient Greek word "amethystos" which translates to "sobriety" in English.
Quartz is said to promote stability, allow the release of negative energy, and stimulate the mind to be opened. It is also great for amplifying the healing properties of other stones used with it, it is used widely in meditation and healing, for this very reason. Because Clear Quartz has prismatic ability, it balances all of the chakras, and allows them all to work together in harmony.