These amethyst tumbles are classed as C grade because the stones have cloudy areas and dips n marks filled with some earth sometimes they are VERY rough, hence a much cheaper than normal price, but they still hold that amethyst magic, and are still pretty if you aren't a perfectionist!
Please look closely at the pictures!!
But these stones would be perfect to make healing grids around rooms or houses, or a healing layout around a person, bed, room or house. The stones measure on average approximately 1.5cm by 2 cm.