The former "Baywatch" star wed Salomon in 2007, but the union was annulled two months later.
They rekindled their romance in 2013 and Anderson confirmed in January, 2014 she and Salomon had remarried. She filed for divorce in July last year, reported E!Online.
"I hope this very special Tiffany engagement ring can bring joy to someone while I put the donation to great use. One hundred per cent of funds raised will go to The Pamela Anderson Foundation, which is dedicated to human, animal and environmental rights.
The Tiffany & Co ring features a 3.24-carat cut diamond stone surrounded by cut diamonds.
Bidding will start at USD 100,000.
