These seashells are beach clams. They range in size from approximately 3/4" to 1". You will receive one 3" x 4" bag full, that's about 1/2 cup. I love the patterns that these shells have when they are spayed with clear acrylic, they are gorgeous. They have nice black, brown, and gray patterns on the outside of the shells. I have used these shell for some of my shell flowers pictures. You will receive one bag of shells.