These black obsidian arrow heads have been skilfully knapped to create some special blades (and dulled for safety, of course).

Black obsidian is a stone of protection, grounding and useful for cleansing of negativity. It is also wonderful for scrying as the black surface is much like a mirror, helping one to "see". As with all black crystals, black obsidian is highly protective and grounding, so is perfect for those with skills in the metaphysical field. Obsidian is also known as volcanic glass, and has a wide variety of variations.