Chalcedony (chal.ced.o.ny) is a cryptocrystalline form of quartz.

Cryptocrystalline stones are divided more by the character of the stone rather than its color, such as the pattern of the crystal, the visual effect and the form that the crystal takes. Chalcedony is transparent to opaque depending on the structure and type of crystal for example agate is translucent while jasper is opaque.

Chalcedony is a nurturing stone that promotes brotherhood and goodwill and will enhance a groups stability. It can be used for telepathy and transmission. This stone absorbs negative energy and then dissipates it so that the energy doesn't move to someone else.
Chalcedony brings the mind, body and spirit into alignment. It sends feelings of generosity and benevolence to you. Chalcedony removes unwanted feelings of hostility and removes sadness. This stone removes self doubt and builds self confidence. Using this stone to meditate will help you become a more open and enthusiastic person.

Chalcedony is a powerful healer and cleanser. This stone helps if you have a lack of maternal instinct, lessens the effect of dementia and senility. Chalcedony balances the mind, body, emotions and spirit into a whole. It heals the eyes, gallbladder, bones, spleen, blood and circulatory system.

Purple chalcedony offers a sense of emotional protection from negativity and it helps you feel more connected to your higher source. It is especially useful for assisting children in coming to grips with their psychic abilities and in protecting them from negative energies.

Purple chalcedony offers both psychic awakening and psychic protection. It enhances the dream state and can help with lucid dream work. It allows you to remain positively centered as you receive intuitive or energetic information from external sources and prevents you from being thrown off center by any negativity that you may encounter on a physical level.

These pieces measure approximately 1.25". They are all very similar and will be intuitively selected for you.