The most common and most likely answer to this crossword clue is the 8 letter word RARITIES
I've seen this crossword clue in Independent
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More clues leading to the result RARITIES
- One taking part in regimental ceremonies which don’t occur often
- Artist, prig at heart, secures collector’s items
- Is a trier mixed up in unusual things?
- Model is with artier collector’s items
- Sir, I rate cultured pearls
- They’re seldom seen: essentially drab grim items of neckwear
- Peculiarities of surreal satire around religious instruction
- They're seldom seen: essentially drab grim items of neckwear
- Artist at Royal Institute draws unusual objects
- Irate, Sir? Bats? They’re seldom seen
Buddy explains!

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 RARITIES mean?
RARITIES noun- A measure of the scarcity of an object.
- (of a gas) Thinness; the property of having low density
- A rare object.