The Blarney Stone (Irish: Cloch na Blarnan) is a block of bluestone built into the battlements of Blarney Castle, Blarney, about 8 kilometres (5 mi) from Cork. According to legend, kissing the stone endows the kisser with the gift of gab (great eloquence or skill at flattery). The stone was set into a tower of the castle in 1446. The castle is a popular tourist site in Ireland, attracting visitors from all over the world to kiss the stone and tour the castle and its gardens.

The word blarney has come to mean "clever, flattering, or coaxing talk".

Origins:

An early story involves the goddess Clíodhna. Cormac Laidir MacCarthy, the builder of Blarney Castle, being involved in a lawsuit, appealed to Clíodhna for her assistance. She told MacCarthy to kiss the first stone he found in the morning on his way to court, and he did so, with the result that he pleaded his case with great eloquence and won. Thus the Blarney Stone is said to impart "the ability to deceive without offending." MacCarthy then incorporated it into the parapet of the castle.

The proprietors of Blarney Castle list several other explanations on the origins of the stone on their website. Many of these suppose that the stone had previously been in Ireland, was taken to Scotland and then returned to Ireland in 1314. The stories listed include one suggesting that the stone was presented to Cormac McCarthy by Robert the Bruce in 1314 in recognition of his support in the Battle of Bannockburn. This legend holds that this was a piece of the Stone of Scone and was installed at McCarthy's castle of Blarney. Although colourful, this folk legend does not account for that fact that it supposes that the stone was removed from Scotland 18 years before Bannockburn.

Ritual:
The ritual of kissing the Blarney Stone, according to the castle's proprietors, has been performed by "millions of people", including "world statesmen, literary giants and legends of the silver screen". The kiss, however, is not casually achieved. To touch the stone with one's lips, the participant must ascend to the castle's peak, then lean over backwards on the parapet's edge. This is traditionally achieved with the help of an assistant. Although the parapet is now fitted with wrought-iron guide rails and protective crossbars, the ritual can still trigger attacks of acrophobia, an extreme or irrational fear of heights.

In 2009, Tripadvisor.com ranked the Blarney Stone as the most unhygienic tourist attraction in the world (although it admitted it had no scientific evidence to back its case).

Prior to the installation of the safeguards, the kiss was performed with real risk to life and limb, as participants were grasped by the ankles and dangled bodily from the height. In the Sherlock Holmes radio dramatisation "The Adventure of the Blarney Stone" (first broadcast March 18, 1946), a man attempting to kiss the Blarney Stone falls to his death. Holmes' investigation reveals this as a murder, the man's boots having been surreptitiously greased before the attempt.

William Henry Hurlbert wrote in 1888 that the legend of the stone seemed to be less than a hundred years old at that time, suggesting the tradition began late in the 18th century. The legend of the Blarney stone was described in A classical dictionary of the vulgar tongue by Francis Grose, printed 1785.

Legend:

It is claimed that the synonymy of "blarney" with "empty flattery" or "beguiling talk" derives from one of two sources. One story involves the goddess Clíodhna and Cormac Laidir MacCarthy. Another suggests that Queen Elizabeth I, while requesting an oath of loyalty to retain occupancy of land, received responses from Cormac Teige McCarthy, the Lord of Blarney, which amounted to subtle diplomacy, and promised loyalty to the Queen without "giving in." Elizabeth proclaimed that McCarthy was giving her "(a lot of) blarney," thus apparently giving rise to the legend.

Echoing the supposed power of the stone, an Irish bard of the early 19th century, Francis Sylvester Mahony, added a number of (humorous) lines to Richard Milliken's "The Groves of Blarney"

'Tis there's the stone that whoever kisses

He never misses to grow eloquent;

'Tis he may clamber to a lady's chamber,

Or become a member of Parliament.

"A noble spouter he'll sure turn out, or

An out and outer to be let alone;

Don't try to hinder him, or to bewilder him,

For he is a pilgrim from the Blarney stone."

Francis Sylvester Mahony.

According to tradition at Texas Tech University, a stone fragment on display since 1939 outside the old Electrical Engineering Building is a missing piece of the Blarney Stone. How this was determined is unknown.