This small Luck Of The Irish River Rock Stone is made from all natural stone. These natural river rocks measure approximately 6" inches squared. Present this stone in your home or garden or give it to a friend or family member as a heartfelt gift. The text and image is engraved into the rock and then colored with black acrylic stain. This stain is resistant to chipping or fading, so it will remain year after year. Due to the nature of the stone, sizes, shapes, colors and thickness will vary with each stone. Colors can range from various tones of blue, gray, tan and red. These variations add uniqueness and character to each memorial.