Onyx is associated with Saturn. The stone of dreams and fantasies. Light dances in fiery opals, making them appear alive and responsive. Opals are linked to our spiritual natures and guardian angels. Both Neptune and Mercury are associated with Opal.
Peridot is believed to open up mental and emotional blocks and stimulate honest communication.
It's also thought to protect lungs, sinuses, and wrists from illness and injury. Peridot is ruled by Mercury. There are many varieties of quartz, and each specialized group has special healing properties. Quartz is a magnificent all-purpose healing and purification stone. It's generally associated with Uranus.