Blue obsidian is used for stimulation of the throat chakra, to enhance one's communication skill, and to assist one in oration, in articulation, and in both the comprehension and pronunciation of new languages.
It has been used in telepathic endeavors to maintain connection with an objects. It has also been used to increase knowledge and understanding during the utilization of tarot cards, gazing, and other fortune-telling attendants.
It is an excellent mineral for astral travel, affording both purpose and direction during the same.
Excerpt from Melody's Love Is In The Earth, ISBN 9780962819063. Used with permission of Earth-Love Publishing House LTD.