The most common and most likely answer to this crossword clue is the 10 letter word GLITTERING
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Buddy explains!

The straight part
We know that "Dazzling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dazzling = glittering.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GLITTERING mean?
GLITTERING verb- To sparkle with light; to shine with a brilliant and broken light or showy luster; to gleam.
- To be showy, specious, or striking, and hence attractive.
- The appearance of something that glitters.
- Brightly sparkling.
- Valuable, desirable.