Diamond Heritage is an insert set in 2005 Playoff Prestige. These cards feature current major league stars from both the NL and AL. These cards were inserted into packs at a stated rate of 1:12 packs. Each pack had 1 insert or parallel card. An average box break would receive 2 or 3 of these cards. Two parallel sets of the Diamond Heritage sets featuring game used bats and jerseys were also inserted.