GISELE’S SALE: With star quarterback Tom Brady in tow, who needs the remembrance of boyfriends past? Gisele Bündchen is putting a few pieces of jewelry up for sale, including a colored diamond ring estimated to bring in $15,000 to $20,000 and a diamond pendant necklace estimated to fetch up to $150,000 at Christie’s Jewels: The New York Sale, on Oct. 15. Sources speculate that the pieces were given to her by former beau Leonardo DiCaprio. Also in the sale are two stones, dubbed the Ponahalo Diamonds, comprising 102.11-carat and 70.87-carat rectangular-cut stones that came from the same 316.15-carat diamond found by De Beers Group in 2005. A portion of the proceeds of the Ponahalo Diamonds, which are estimated to fetch from $2 million to $4 million, will be donated to the Diamond Empowerment Fund, a nonprofit organization geared to empower diamond-mining countries in Africa. Christie’s and Alberta Ferretti will host a party to show the Ponahalo Diamonds at Haunch of Venison in New York on Sept. 23.