Full round encased in ancient algae contains incredible chalcedony and color variation with some ring details and agate fortification. Really interesting with 5 very distinct colors present. Slab measures about 4 inches wide and 3 1/2 inches tall. Is about 1 3/4 inches tall, standing, and rests nicely angled on flat surface. Although reverse is rough and uncut, it additionally has great features and color. Weighs 1 lb 2 ounces. Excellent polish.