Crossword Genius

Case of diamonds? (4)

Ross

I believe the answer is:

suit

I believe this clue is a double definition.

'case' is the first definition.
(I know that case can be written as suit)

'diamonds?' is the second definition.
(diamonds is a playing card suit)

'of' is the link.

(Other definitions for suit that I've seen before include "Jacket and trouser set" , "Legal action - courtship" , "diamonds, perhaps" , "Legal action - hearts, perhaps" , "Quarter of a full deck" .)

I've seen this clue in The Globe and Mail.
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