"golden truth" is correct and usable in written English.
You can use it when referring to something that is accepted as indisputable or unquestionable. For example, "It is a golden truth that everyone should do their part to help the environment."
In other words, Harry qua golden is truth-maker for the proposition that Harry is golden.
The golden mean of truth in all things is no longer either known or appreciated.
In comic books of the nineteen-forties, Wonder Woman, the sexy Amazon superhero, wields a golden "lasso of truth".
This means, of course, that in spite of his emphasis on the need to shield the golden apple of truth from the masses much of the time, Maimonides advocates overtly teaching every person that the anthropomorphic images in the Bible are literally false.
Growing up, our mother was definitely no Wonder Woman with her golden lasso of truth.
It's not bulletproof bracelets, an invisible plane or a golden lasso of truth.
I believe that our subconscious mind often communicates in symbolic terms through dream imagery, and there are golden nuggets of truth to be uncovered when we chose to pay attention to that inner dialogue.
Let me tell you, if I had Wonder Woman's Golden Lasso of Truth and access to both men's torsos, I bet that none of you would bet on Rove here, and if any of you would, then please identify yourself because I don't ever want to be at the poker table with a guy willing to risk that much on pure conviction.
The flight crew plied them with champagne throughout the journey and played the national anthem over the PA, before waiting on the steps to applaud each of the 320 athletes and support workers to leave the plane, with the last exiting almost half an hour after BA2016 landed – its much vaunted golden nose cone looking, in truth, slightly more bronze.
One of the first pieces I wrote for The New Yorker, back in December , 1995 was entitled "Who Killed the Middle Class?" Here is how it ended: "At some point, both parties will have to level with the voters and tell them the truth: the postwar Golden Era is gone forever, and the great middle class has gone with it.
