Artisan Dice is a Texas-based outfit composed of craftspeople who make "rare, exotic and over the top" gaming dice "from the finest and most exotic materials available."

As extreme examples, bison horn, Jack Daniels whiskey barrel staves, lignite coal and even moose poop (shown below, respectively) are all raw materials that they create dice from.

Their Memento Mori dice, however, utilize their most hardcore material yet: Human bones.

"Memento mori" is essentially Latin for "Remember that everything eventually dies." Here, someone has gained the unique opportunity to both die and become a die.

"These macabre D20 are crafted from human bones sourced from retired skeletons once used in medical universities," the company writes.

"Due to state export and import laws, we are unable to ship Memento Mori dice to the following states: Georgia, Tennessee, and Louisiana."