The cross is no benign decoration for wall or jewelry.
It is a sign of shame and scandal.
And it might have passed from human notice except for particular crucifixion over two thousand years ago.
From Fleming Rutledge:
We can begin with the oddity of the universally recognized signifier, “the crucifixion.” It will help us to understand the uniqueness of Jesus’ death if we can grasp the idiosyncrasy of this manner of speaking. There have been many famous deaths in world history; we might think of John F. Kennedy, or Marie Antionette, or Cleopatra, but we do not refer to :the assassination,” “the guillotining,” or “the poisoning.” Such references would be incomprehensible. The use of the term “the crucifixion,” for the execution of Jesus show that it still retains a privileged status. When we speak of “the crucifixion,” even in the secular age, many people will know what is meant. There is something in the strange death of the man identified as Son of God that continues to command special attention. This death, this execution, above and beyond all others continues to have universal reverberations. Of no other death in human history can this be said. The cross of Jesus stands alone in this regard; it is sui generis. There were many thousands of crucifixions in Roman times, but only the crucifixion of Jesus is remembered as having any significance at all, let alone world-transforming significance.
Fleming Rutledge, The Crucifixion – Understanding The Death Of Jesus Christ Eerdmans, Grand Rapids MI, 2015, pg 3.