chalcedony:
Properties : Believed to enable truest form of self-expression, also eases throat problems, including soreness and coughs. Helps to soothe deep emotional wounds and open and widen inner perception.
Healing effects : Eases fears and nightmares helping to bring peace and serenity and soothes troubled sleep. Assists with breathing problems, especially related to stress.
Personal uses : Wear on throat to clear communication blockages or ease soreness of voice.
Color : vivid pale blue, purple and orange
Mohs hardness : 7