The most common and most likely answer to this crossword clue is the 8 letter word AGLITTER
I've seen this crossword clue in Financial Times
A
G
L
I
T
T
E
R
More clues leading to the result AGLITTER
- Sparkling silver conveyance
- A good outcome to queen’s labour? Brilliant!
- Sparkling silver object discovered in Lithuania by soldiers from the east
- Shiny silver paper in the street?
- Gleaming silver trash
- Sparkling silver rubbish
- Refuse to touch silver that’s sparkling
- Shining silver items thrown out
- Silver on recent issue, sparkling
- Often got retail dresses that are sparkling
Buddy explains!

The straight part
We know that "Sparkling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sparkling = aglitter.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.