Fabulous collectible Horse Conch shell! These beauties still have the Periostracum (outer layer of shell). The shells with the 'Perio' have a more organic natural appearance- some will have natural barnacle growth or calcium deposits. You will receive the shell similar to the photos- 12-13" size conch. These large conch shells are perfect as a feature display piece, and look spectacular on a mantle, bookshelf. FASCIOLARIA GIGANTEA All of our shells are real & unique. The majority of the shells we sell are intended for crafting purposes & are not specimens (unless otherwise specified); meaning that most will show evidence of their lives in the ocean. There may be natural variations such as but not limited to: growth marks, pinpoint holes, chipped points or edges, calcium build up, etc. WE DO NOT SELL “PERFECT” SHELLS- our shells are natural, beautiful, & imperfect.