caption: The image shows a pair of conch shells on a black surface, with a paper containing text and a barcode beside them. The text on the paper appears to be a certificate of authenticity, indicating that the shells are of various sizes and shapes. The conch shell on the left is a light brown color with a white underside, while the one on the right is a darker brown with a smooth, glossy finish. Both shells have a unique pattern of ridges and grooves, and the barcode is located at the bottom right corner of the paper.