This is the largest known fragement of the True Cross in the world. It is treasured at the Holy Monastery of Xeropotamou, Mt. Athos. A hole from the nail that went through our Saviour's right hand, can be seen surrounded by diamonds at the lower portion of the vertical cross-bar.
My wife saw this at a friends house and suggested that we get one too. I was surprised with the quality and detail. Very nice.
It's special to have icon of this Mt Athos relic