Championship ring - Wikipedia
The Most Expensive Super Bowl Ring Of All Time Cost More Than You Think
What's a historic Super Bowl ring worth? Heritage Auctions has 12 up for bid - Sports Collectors Digest
The Materials Science behind Sustainable Metals and Alloys
Here's how much a Super Bowl ring costs and how it's made – NBC 6 South Florida
Las Vegas jewelry show draws attendees searching for high-end and unusual pieces
The Evolution of the Super Bowl Rings
Photos: All the Super Bowl rings
Photos: All the Super Bowl rings
Evolution of Super Bowl Rings: History, Costs, Jewels & More Facts – WWD