Fake ring has ruby with no shine (6)
I believe the answer is:
phoney
'fake' is the definition.
(I know that fake can be written as phoney)
'ring has ruby with no shine' is the wordplay.
I cannot really see how this works, but
'ring' could be 'phone' (synonyms) and 'phone' is found within the answer.
A single letter 'y' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for phoney that I've seen before include "Sham or insincere" , "Sham, not genuine or sincere" , "Not genuine, insincere" , "Fake, misleading" , "Fraudulent" .)