1. A method comprising: accessing a set of images of an item and a descriptor of the item, the set of images and the descriptor of the item being provided from a seller device corresponding to a seller of the item, the item being a specimen of a product having a three-dimensional (3D) shape; identifying a 3D model of the product based on the descriptor of the item, 3D model of the product including data that is representative of the 3D shape; and generating a 3D model of the item based on the identified 3D model of the product and based on the set of images, the generating of the 3D model of the item being performed using a processor of a machine.