Meteorite.

Gibeon Meteorite was formed in space four billion years ago. It exploded upon entering Earth’s atmosphere, landing in the desert of Namibia, Africa. Pieces scattered over an area of 171 miles long by 62 miles wide. The Namibian government banned the export of Gibeon Meteorite, as any newly discovered pieces are automatically protected as national monuments. This means that any meteorite specimens in circulation are of increasing value and incredibly limited supply. The origin and rarity of each meteorite ring makes it a distinctive piece of art.