"all treasures" is correct and usable in written English.
You might use it, for example, in a sentence such as, "She sought after all treasures, both physical and metaphysical."
They were all treasures, and we loved them so.
It's wonderful, it's all treasures, and there's still some of her favorite coats and all her drawings and her pictures.
"The natural world is the greatest of all treasures," Mr. Attenborough says at the start of Part 3, "Our Fragile Planet".
By no means all treasures, the 76 paintings and sculptures, spanning Victoria's reign from 1837 to 1901, make a wonderfully fustian display.
After all, treasures of the ex-colonies were already on show in the British Museum, while the Commonwealth Institute offered a reassuring multicultural image of what had become of the empire.
Worst of all, I had forgotten that all treasures which come must eventually go -- just like our desires.
We will all treasure his performances and remember him with fondness and enormous admiration".
My Islam loves all, esteems all, and treasures all.
"All these treasures will be preserved," Mr. Whalen said.
Preserving all these treasures is a science in itself.
Of all the treasures torn away by war, universalism is perhaps the most precious.
