Chakra(s): throat, third eye, and crown
Astrological sign(s): Libra, Aquarius
Mohs scale: 6–7
Spiritual uses: Chalcedony was used in the Jewish High Priest's Breastplate with inscribed gems representing the twelve tribes of Israel, worn by Moses’ brother Aaron.
Mental uses: The pastel blue of this chalcedony elicits the soothing energy of a peaceful lake. Use this stone to help turn off the incessant chatter going on in your mind.
Emotional uses: Blue chalcedony relieves hostility and irritability. It promotes feelings of kindness and compassion.
Physical uses: Blue chalcedony is useful for healing problems associated with the throat, neck, or head. Use this stone for a headache, a sore throat, or an earache.