Gives a ring with lead, platinum - the centre having a single sapphire on top (6)

I believe the answer is:

phones

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

'gives a ring' is the definition.
(I've seen this in another clue)

'lead platinum the centre having a single sapphire on top' is the wordplay.
'lead platinum' becomes 'p' (I can't explain this - if you can you should believe this answer much more).
'centre' says to take the centre.
'having' means one lot of letters go next to another.
'a single' becomes 'one' (a single thing - only one).
'on top' says to take the initial letters.
The middle letter of 'the' is 'h'.
The first letter of 'sapphire' is 's'.
'p'+'h'+'one'+'s'='PHONES'

'with' acts as a link.

Can you help me to learn more?

(Another definition for phones that I've seen is " 'Calls, rings (6)'".)

I've seen this clue in The Irish Times.

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