To facilitate healing and opening of heart chakra:
gardenia, rose, lavender, tuberose

To calm, soothe and strengthen mental and emotional states:
amber (good for internal organs), frankincense, jasmine, lavender, myrrh, narcissus, rose, sandalwood

To stimulate crown, third eye and etheric consciousness:
gum mastic, henna, jasmine, lotus, musk, myrrh, sandalwood

To facilitate evolution of lower chakra states:
agarwood, amber, jasmine, rose

To purify and cleanse the environment of discordant energies:
agarwood, cedar, copal, gum benzoin, juniper, sage, sweet grass

To invoke benevolent energies and spirit presence:
amber, copal, gum benzoin, gum mastic, sandalwood, sweet grass

To generate atmosphere conducive for meditation:
frankincense, gum benzoin, gum mastic, musk, myrrh, sandalwood, sweet grass