Griswold's Heart is a Set Ornate Plate that is a part of the Griswold's Legacy in Diablo 2 Resurrected (D2R). This exceptional Body Armor has a quality level of 44 and a treasure class of 66. An important benefit coming from Griswold's Heart:
A huge strength boost.
This is the only Set item in the game that has +X to Defensive Auras (Paladin Only) attribute.
The fastest way to get this item on Battle.net is via trading, you can use the Item Price Checker to see how much Griswold's Heart is worth.
Farming it by killing monsters is possible, check the drop rate table below for more information.
It can also be gambled but the chances are very slim.
Griswold's Heart drop rate table
The monster with the highest drop chance of dropping Griswold's Heart is Mephisto on Hell difficulty in Durance of Hate Level 3 of Act 3. Farming the monsters listed below gives you the highest chance of finding that item.
Griswold's Heart variants
Below is a list with different variants of Griswold's Heart. See the stats of its normal or upgraded variant.