2 piece lot of Polished red abalone shells both measuring approximately 6 inches long. This polished red abalone shell has had its rough outer layer removed, revealing beautiful red tones with pearly white accents. The red abalone, Haliotis rufescens, is a species of very large edible sea snails. Red abalone is the largest, and most common abalone found in the northern part of the state of California. The red abalone's shell length can reach a maximum of 31 cm, making it the largest species of abalone in the world. The inside of the shell is strongly iridescent. The shell is large, thick, and dome-shaped. It is usually a brick red color externally.