If you mean a regular sentence with a subject, verb, and otherwise
than yes.
The sun was shining off her golden hair making it have a glorious and brilliant glow.
hows that?
he was hypnotic at the brilliant diamond
Alexander the Great was a brilliant militant.
Even though the boy was brilliant, his grades suffered because he was so boisterous in class.
Almost everyone agreed it had been a brilliant birthday party.
The diamond is brilliant. (shiny) The idea was brilliant. (good)She was a brilliant person. (smart)The speaker had brilliant sound quality. (clear)
No, "The brilliant sunset over the desert" is a sentence fragment because it lacks a subject and a verb. A complete sentence needs both a subject (who or what the sentence is about) and a predicate (what the subject is doing or what is happening).
"What the exact mix of experience and natural talent [was] that made Austen the brilliant [writer] she was may never be [remove un]known." As for why it is incorrect... because it is confusing, because there is nothing for brilliant to modify, and because "may never be unknown" is opposite to the contextual meaning of the sentence. The added text in brackets fixes the grammar, but the sentence is still rather awkward. I'd reconstruct it this way: What the exact mix of experience and natural talent was that made Austen a brilliant writer may never be known. Or, more simply: The exact mix of experience and natural talent that made Austen a brilliant writer may never be known. Or even: We may never know what combination of experience and talent made Austen great.
the, brilliant, the, sixteenth
Joel's teeth and tongue were stained a brilliant crimson from betel leaf, and listening to him became hypnotic.
The brilliant glow of the light drew them to the building. It was a brilliant deduction that solved the case.
After desseret, Jo had pudding with rich caramel in side,it tasted brilliant she wanted more, that charged a whole £20 for that.
The girl stroked the tawny fur of her old cat as she gazed up at the brilliant full moon, oblivious of everything around her.