Astrological Sign: SAGITTARIUS 
Element: EARTH
Obsidian is derived from the name of the prominent ancient Roan, Obsius. The Obsidian helps to drain away negative energies absorbed from others. Think of it as a psychic sponge, that will help to drain off the stresses of the day when you hold it for a few moments. It is also a stone that protects against negativity. 

Obsidian is a fire stone, born of the volcano. Used to create tools and weapons by many primitive people, it lets us slice to the core of a matter and to release and ground negativity. Obsidian is considered extremely protective and said to allow no negative energy or negative spirit to enter. 

Obsidian can be polished to a shiny mirror surface. Because of this shiny, mirror surface, Obsidian is attributed with the ability to reflect back to us our true selves. It reveals to us our flaws in no uncertain terms. Because of this property, obsidian is said to remove emotional blocks. Said to be a vision stone for use in vision quests and prophetic dreaming. 

Obsidian is a gemstone of the 1st Chakra. It provides protection, grounding and protection from negative self-image, especially with respect to our physical appearance. Especially helpful in times of grief.  

Obsidian was given as a remedy for snake poison. Useful to combat grief and depression. It is useful as a grounding stone. Gem therapists recommend that you gaze into it for a very short time (1-5 minutes) each day for 3 days when you need insight into a problem.
Obsidian is most frequently black or very dark brown, but it can also be grey or green. Obsidian is related primarily to the root chakra, though differing colors may relate to different chakras as well and hold their own unique properties.
Rainbow Obsidian
Green Obsidian
Blue Obsidian
Snowflake Obsidian
Mahogany Obsidian
Peacock Obsidian
Gold Sheen Obsidian
Midnight Lace Obsidian
Purple Obsidian