The djed pillar was a roughly cruciform object with at least three cross bars, but almost always four that became one of the most recognizable symbols in ancient Egypt.
A discussion of the djed Pillar would not be complete without mentioning the Thet symbol. In some depictions, the djed pillar is represented alongside the thet sign, today often called "the blood of Isis", which represented that ancient great goddess who was closely associated with Osiris.
The Djed is represented on two ivory pieces found at Helwan dating to the first dynasty, evidence that the use of this symbol is at least that old.