of inestimable value

See: invaluable
References in classic literature ?
Richardson at the vicarage: she affirmed that he wished it no less than herself, and that such an arrangement could not fail to benefit all parties; for my mother's society and experience would be of inestimable value to them, and they would do all they could to make her happy.
Nevertheless, as a personal document, the Everhard Manuscript is of inestimable value.
I was quite patient; the grand open country all round me offered lessons of inestimable value in what we call aerial perspective.
And his suggestions on the question of dress--which too often assumes the nature of a problemwere of inestimable value to his father-in-law.
High oaken sideboards, inlaid with ebony, stood at the two extremities of the room, and upon their shelves glittered china, porcelain, and glass of inestimable value.
Apart, in separate compartments, were spread out chaplets of pearls of the greatest beauty, which reflected the electric light in little sparks of fire; pink pearls, torn from the pinna-marina of the Red Sea; green pearls, yellow, blue, and black pearls, the curious productions of the divers molluscs of every ocean, and certain mussels of the water courses of the North; lastly, several specimens of inestimable value.
He kept entirely silent, and gazed incessantly upon the stony fragments heaped up in the car--worthless to-day, but of inestimable value to-morrow.
They might be of inestimable value to me in the coming time--if I could prevail on him to communicate them.
She would no doubt have pursued her admonition much further, and would have founded on it a long list of precious precepts of inestimable value, but that the young gentleman standing by in a somewhat uncomfortable and discomfited manner while she read her spouse this lecture, occasioned her to bring it to a premature conclusion.
They were of inestimable value, the contents of that little vial; and, as he said so, he threw some of the perfume into the air and filled the room with piercing and invigorating delight.
A diamond necklace, with pendants of inestimable value, were by this means also made more conspicuous.
Your vision and determination have been a source of inestimable value.