Blender file contains the Tan Seashell and its real-world scale, as 2 separate objects. PBR texture maps for color, specularity, roughness, normal and displacement are setup using a Principled BSDF shader with the Principled Texture setup in the Shader Editor.
OBJ, MTL, FBX and PLY file formats are included for both Tan Seashell and its real-world scale version. Textures are packaged in BLEND file along with a zipped Textures folder.