This spectacular diamond may just be too big and impressive for its own good.
The three-billion-year-old rock - the largest discovered in more than a century - has failed to find a buyer at auction, leading to claims it is "too big" to sell.
It means the 1109-carat rock, which is the size of a tennis ball, may have to be cut into smaller pieces - an outcome its current owner is at pains to avoid.
"It's only the second stone recovered in the history of humanity over 1,000 carats. Why would you want to polish it?" Lucara Diamond Corp chief executive William Lamb told Reuters.
"The stone in the rough form contains untold potential ... As soon as you polish it into one solution, everything else is gone."