The Interstellar Collection, LLC works directly with meteorite hunters, scientists  and collectors from all around the world.  The provenance of each stone can be traced from the moment they are discovered to the moment they enter your hands. Each stone is officially classified by leading scientists in the field of Meteoritics, who provide analysis and a write-up of the specimens. Those stones are then assigned a unique name/identifying number, which are published to the official Lunar and Planetary Institute's Meteoritical Bulletin.  Bottom line is - The Interstellar Collection, LLC unconditionally guarantees each and every meteorite that is sold.