The cross was discovered in 1912 during archaeological excavations in Anuradhapura. It is cut in sunk reliefon the side of a smooth granite column of which a fragment was excavated. An immediate determination about the cross came from the Archaeological Commissioner of Ceylon, Edward R. Ayrton, who concluded that it was a Portuguese cross. In 1924, Ayrton's successor, Arthur Maurice Hocart, put more effort to clarify the cross and he described it in his publication, Memoirs of the Archaeological Survey of Ceylon, as being "a cross of a floret type standing on a stepped pedestal from which emanates two fronds on each side of the cross like horns". Hocart also concluded it was a Portuguese cross. Both men considered that it was a Nestorian cross or "Persian Cross" from the Portuguese era. A number of historical records also suggest that Assyrian Church of the East may have been in Sri Lanka between the middle fifth and sixth centuries. There, it is believed that the cross was dated to the Anuradhapura period. Meanwhile, whilst it was considered as a Portuguese cross these claims are questionable given various historic facts, notably that the Portuguese did not have a presence in Anuradhapura at the time. The most conclusive determination of the cross's origins was made in 1926 by Humphrey Codrington, based on evidence contained in a 6th-century manuscript, Christian Topography, that a community of Persian Christians were known to reside in Taprobanê. Codrington wrote in his book, A Short History of Ceylon, that "about A.D. 500 we read of a Persian colony; a Nestorian cross undoubtedly belonging to this community is to be seen in the Anuradhapura museum". In 1954 the then assistant Archaeological Commissioner, Titus Devendra, dismissed the historical reliability of the Christian Topography and attributed the cross to the Portuguese dating it later than 1547. Academics however have since concluded that the Christian Topography is historically accurate. In 1984 an archaeological find at Manthai confirmed the existence of Persian Christians in Sri Lanka, including a seal with a Nestorian cross, with similar stylistic features to the Anuradhapura cross.
Symbology
The cross is considered as a variation of the St Thomas Cross due to its similar shape and possible links between the early Christian community in South India and Sri Lanka. The Anuradhapura cross however has unique features when compared to other crosses. The three main elements that the Anuradhapura cross has in common with Nestorian crosses are: the "leaves" at the base of the cross, which symbolize the "tree of life" ; the second element is that each of the arms of the cross terminate in a pearl. Pearls played a central theme in Syriacdevotional literature and iconography. The third element is the base, which is a three-stepped pedestal. The three tiers symbolise the three levels of paradise, the three decks of the ark, and the three limits of ascent to Sinai.
