The #3 or third quality quahogs are full shells, with either no purple or more significant chips, lines, or other cosmetic problems. They can have varying degrees of purple or no purple. The majority of these tend to be good quahogs, just missing the purple edges. These are sold by the half shell; they do not come in pairs. Each shell is approximately 4" to 4.5" long and 3" to 3.5" wide and weighs approximately 129 grams.The quahog (or quahaug) is native to the eastern shores of North America....