Each pendant graduates from agate to amethyst crystals and the combination on each one is completely different from the next. Pendants are finished in a silver coating to hold their form. Amethyst is the purple variety of quartz crystal composed of silicon dioxide with traces of iron. Helpful in ridding nightmares. Just hold the Amethyst crystal on the forehead for a minute and ask it to guide you through a peaceful sleep, then place it under your pillow. Also helpful to calm an overworked and overstressed mind. It is thought to dispel negativity and create a peaceful environment. Agate is also known as chalcedony quartz and comes in many colours and varieties. It is used to harmonize Yin and Yang, help build self-confidence, enhance mental function and strengthen the body/mind. Agate is a good protective energy stone, and also helps the body's connection to the earth. It is considered a good luck stone, and enhances creativity and stimulates the intellect.