Black Obsidian shields against negativity. Helps one to recognize flaws and promotes changes necessary to eliminate flaws. Induces creativity. Helps one gain insight. Provides relief for illness. Metaphysical properties are provided for your information and are not meant to replace the advice of a qualified physician or medical practitioner. Due to the nature of this product, color, size, and shape will vary. Points are approximately 2-3” for small, 3-4” for medium, and over 4” for large.