Crossword Genius

Stick to relatively cheap jewellery (5)

Ross

I believe the answer is:

paste

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'stick to' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for paste that I've seen before include "It may be put on teeth" , "Adhesive of mixed water and flour" , "(In computing) insert text into a document" , "Watery cement" , "sound beating" .)

I've seen this clue in the Evening Standard.
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