Colored diamonds are some of the rarest treasures on Earth. In fact, only about 1 in 10,000 diamonds displays a fancy color. Among the rarest of the rare is this 10.03-carat fancy yellow diamond that has been graded internally flawless by the Gemological Institute of America, meaning the stone is near the pinnacle of diamond clarity. The rectangular brilliant-cut stone, which is set in a platinum and 18k gold ring, is flanked by triangular-cut diamonds weighing a total of 3.26 carats.

Fancy Yellow Diamond, Diamond, Platinum, Gold Ring
Auction: December 5

This Patrick Mahomes Kansas City Chiefs jersey has been photo-matched to one of his Top 20 all-time performances: the November 14, 2021, game against the Las Vegas Raiders, during which Showtime threw for 406 yards and five touchdowns while accruing a 127.6 quarterback rating. Mahomes gifted the jersey to the Raiders’ Pro Bowl wide receiver DeSean Jackson, to whom he left the following inscription: “To D Jac, Keep inspiring guys to have they own swag on the field! Patrick Mahomes #15.”

2021 Patrick Mahomes Game Worn & Signed Kansas City Chiefs Jersey
Auction: December 5-7

This iconic prop is the only screen-used hero “flying” wooden hoverboard from Back to the Future Part II. Signed by Michael J. Fox and writer-producer Bob Gale, it is the very hoverboard Marty McFly borrows from a little girl to escape a beating at the hands of Griff Tannen (Thomas Wilson) and his gang of brutes. The “Mattel” hoverboard comes from Fox’s stunt double Charlie Croughwell, who is donating 50 percent of the proceeds to The Michael J. Fox Foundation for Parkinson’s Research.

Back to the Future Part II Screen Used “Flying” Hoverboard (Universal, 1989)
Auction: December 7