Snowflake Obsidian stones are great for grounding your psyche and protecting it from negative energies.  They can assist you in being receptive to the healing energies of the universe and help draw past karmic patterns to the surface for self eximination. This form of obsidian offers us courage and persistance dealing with lifes probelms. They also help you tap into the universal flow of spirit when attempting communication with loved ones who have passed over. approx  inch or so. Marking vary accrording to vein they were mined from, some with smaller spots and others with large ones, and some with very few. These stones offer all the energy of the regular black obsidian plus!