The Cardinals' World Series rings feature 103 round diamonds and a "rally squirrel" atop home plate.
The Cardinals received their World Series rings before Saturday's game, and each ring includes the player's name, number and the years of the Cardinals' 10 previous championships.
They also include a tiny squirrel running across home plate.
In Game 4 of last year's NL Division Series, a squirrel darted across home plate during Skip Schumaker's at-bat -- and the Busch Stadium crowd went wild.
Cardinals fans adopted the critter's image throughout the playoffs, when it was seen on T-shirts, memorabilia and images on stadium screens.
Earlier this year, a short-printed variant of Schumaker's Topps baseball card focused on the squirrel.
The rings, designed and produced by Jostens, feature faceted rubies, a 14 karat yellow gold frame and 103 round diamonds.
The underside lists the three playoff series scores and the words "Happy Flight," the Cardinals' clubhouse rallying cry last season.
"We are excited to present the 2011 team with their rings," owner Bill DeWitt III said in a statement. "We worked hard to design a ring that would tell the epic story of 2011, and also pay tribute to the great history of the franchise."