• Grade A++ Extra Large Rough Natural Black Obsidian, High-quality specimens from Mexico.
• Size: about 3 to 10 inches.
• Each specimen is unique in shape, weight. You can choose between the 3-6 oz, 6-10 oz, 10-16 oz, 1-2 lb, 2-3 lb, 3-4 lb and more.
• The stones shown are for illustration as these are natural items please expect some variance from item to item.
• Black Obsidian is known to be very protective and energy clearing.
• It can be used in energy, tumbling, decoration, display, jewelry making, chakra balancing, reiki or other metaphysical practices and more. 
• Perfect gift for beginners or collect crystals.
• As it's raw stone, some black obsidians may have little other mineral inclusion. 

Black obsidian is a great grounding stone, and its energy may work by helping you in moving any excess energy down thru the earth star chakra through Mother Gaia for grounding. Another facet of black obsidian is its ability to draw in negative energy, thus protecting the wearer or the surroundings in which it is placed. As such, black obsidian is used as protection in various body adornments and in many areas of the home.