"precious heritage" is correct and usable in written English.
You can use it to refer to something that has been passed down from previous generations and is considered valuable. For example, "My family's precious heritage includes a collection of antiques passed down through many generations."
Swiss news reports stated that the officials had allowed a "precious heritage" to slip out of the country's grasp.
In an attempt to rescue precious heritage from imminent destruction, these memory objects often ended up with museums, collectors, and art dealers in the West.
But it also cannot endure if we allow our precious heritage of ordered liberty to be ripped apart amid the sound and fury of our time.
The restoring the site of the original games, he added, a hallowed spot and a precious heritage would be restored to the world.
Somehow we must protect the wooded hills, the greening meadows, the clean, sweet-running brooks and the historic white houses -- are a precious heritage".
"A basic premise for dialogue is respect for holy sites that are sacred to religious believers and are a precious heritage for our civilizations," the appeal said.
Chinese residences are precious heritages to mankind, which reserves several thousand years of historical cultural information.
Modern adaptation the old palace made it possible to rediscover the precious historical heritage.
Windsor Castle is simply not the right place for our most precious art heritage to be held.
"This is precious cultural heritage plucked from the ground before experts have even had a chance to see it".
The final aim is to evidence the extreme efficacy of a conservation strategy, which can constitute the first guarantee for a sustainable intervention on this precious cultural heritage.
