Some neck jewellery, hot stuff, is placed around Eleanor's jacket (10)

'some neck jewellery hot stuff is placed around eleanor's jacket' is the definition.
I can't judge whether this definition defines the answer.

'hot stuff is placed around eleanor's jacket' is the wordplay.
'hot stuff' becomes 'lava' (I've seen this in another clue).
'is placed around' becomes 'lier' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'jacket' says to hollow out the word (remove centre letters) (the letters worn by the word as a 'jacket' are use).
'eleanors' with its middle removed is 'es'.
'lava'+'lier'+'es'='LAVALIERES'

Can you help me to learn more?