"irreplaceable treasure" is a correct and usable phrase in written English.
You could use it to describe a unique item or experience that is impossible to obtain again, such as a special memory with a loved one. Example: "The memory of my Granny's cooking is an irreplaceable treasure."
We have lost an irreplaceable treasure.
Certainly each of these singers is an irreplaceable treasure.
"The site has already suffered four years of conflict, it suffered from looting and represents an irreplaceable treasure for the Syrian people and for the world," Ms Bokova said.
Many of its shrines, tombs, statues, and colonnaded thoroughfares were built during Roman rule in the first three centuries AD. "The site has already suffered four years of conflict, it suffered from looting and represents an irreplaceable treasure for the Syrian people and for the world," UNESCO Director-General Irina Bokova said Friday.
In four spacious movements that together last more than half an hour, Dvorak pour his heart into music that matched Brahms for sheer luxury of invention and scrumptiousness of sound; once you have heard the inexplicably obscure, incongruously sublime Poco Andante, it will remain with you always as an irreplaceable treasure.
The epicentre of the quake is close to so many irreplaceable treasures of such importance to humanity that it could have been almost infinitely worse.
As the show's opening date neared, the Metropolitan Museum's director, Philippe de Montebello, was in the forefront of an international effort to rescue at least some of the irreplaceable treasures looted from the Baghdad museum and other Iraqi museums.
Yet at Cragside, as with all of the trust's 300-plus historic house museums, employees still use a standard British mid-20th-century conservation method — chiefly an electric or hot water heating system that maintains constant humidity levels — to protect irreplaceable treasures, like its painting by J. M. W. Turner and its early Burroughes & Watts billiard table.
Parliament itself had sustained severe damage by this period in the Second World War, and Smuts noted: "Irreplaceable treasures of a thousand years of almost uninterrupted progress and culture and peaceful civilisation have disappeared forever.
But it is unclear why this characterization offers a compelling argument against the protection of an irreplaceable national treasure.
But Mr. Spano and some legislators called the board's actions a threat to Playland, which they consider an irreplaceable county treasure, one that has survived as a family park even as others, including Asbury Park, Freedomland and Palisades Park, have deteriorated.
