"invaluable objects" is a perfectly correct and usable phrase in written English.
For example, you could use the phrase in a sentence such as: "The museum displayed an impressive collection of valuable and invaluable objects from antiquity."
And yet, although poorly conditioned and compensated, they are called upon to protect rooms full of fragile, invaluable objects.
Serious fears were extensively entertained that those powers which the patriot statesmen, who then watched over the interests of our country, deemed essential to union, and to the attainment of those invaluable objects for which union was sought, might be exercised in a manner dangerous to liberty.
Their jagged, multifaceted forms, in addition to their reflective surfaces, present them as invaluable objects that are becoming increasingly scarce, like the animals themselves.
Theo escapes from the burning museum with the invaluable object in his possession, and is thus inducted into a life of criminal secrecy that propels the book's writhing narrative.
This simple-to-follow textbook/reference provides an invaluable guide to object-oriented C++ programming for scientific computing.
The change of flux of stars will give us invaluable information on our targeted objects passing the star and thus we can indirectly observe the targeted objects.
We have a collection of documents and objects that are invaluable both culturally and monetarily, for example The Munich Agreement (which allowed Hitler to annex the Sudetenland).
Objects of art - which cannot be exported - quite reasonably include invaluable icons and rare antiques, but contemporary paintings and objects made by hand (hard to come by in any case) may also be confiscated.
In this respect, some of the newer equipment has proven to be invaluable, enabling dramatic viewing of many dark objects and features in real time and without the need of CCD imaging.
A Czech scientist who possesses invaluable information involving the process for miniaturizing human beings and objects escapes to the United States, where he is shot in an assassination attempt.
With there being an almost infinite amount of information in the world, AI is becoming an invaluable tool for interpreting and understanding the relationships between data entities (objects) across hundreds of industries.
