Rose quartz is associated with love, the heart and beauty, and is thought to be a healing aid for the heart chakra. Imbalances of this chakra have been said to cause colds, allergies and psychosomatic illnesses. When in balance, the heart chakra is thought to make one open to love and compassion. Some believe that rose quartz has calming effects and helps people develop strong friendships. Black Obsidian is a stone of psychic protection and creates a shield around the aura. By keeping you powerfully grounded to Mother Earth, Black Obsidian creates a safe space for us to work through emotional issues or strengthen our psyche.