The fourth chakra, Crown, is associated with the heart and the immune system and is believed to be the seat of love and compassion. It is associated with the color green, the air element and the sense of touch.
Some of the crystals associated with the heart chakra are: watermelon tourmaline, rose quartz, emerald, green calcite, jade malachite and moonstones. The life lesson for this chakra is forgiveness and compassion for yourself and others.
The chakra blends can be used in the bath (5-6 drops per full tub), in massage oils, diffused, blended into a room spray or simply dotted onto a tissue or personal inhaler and carried with you throughout your day for inhalation when necessary.