The beautiful, small, natural Rain Flower Pebble came from an ancient large gravel deposit in Luhe District near Nanjing. The smooth surface and rounded shape are the result of millions of years of tumbling action with sand and gravel in an extinct stream. This is a well worn agate  measuring 5.5 cm long, 4.5 cm wide and 1.5 cm thick. The banding pattern is typical of one category of Rain Flower Pebble highly valued in China. Color, shape, and the banding pattern are all key features of this stone.