Crossword Genius

Took apart loot below, sharing diamonds (3,4)

Ross

I believe the answer is:

ran down

I'm a little stuck... Click here to teach me more about this clue!

'took apart loot' is the definition.
The definition and answer can be both related to bodily activities as well as being past participle verbs.
Maybe they are linked in a way I don't understand?

'below sharing diamonds' is the wordplay.
I cannot really understand how this works, but
'below' could be 'down' (in a down clue, some letters go below others) and 'down' is found within the answer.
The remaining letters 'ran' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Telegraph.
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