Mineral found in ceramic artwork (4)
I believe the answer is:
mica
'mineral' is the definition.
(I know that mica is a type of mineral)
'in ceramic artwork' is the wordplay.
'in' indicates a hidden word.
'MICA' is hidden in the letters of 'ceramic artwork'.
'found' is the link.
(Other definitions for mica that I've seen before include "Isinglass" , "Shiny silicate mineral" , "Flexible mineral found in igneous and metamorphic rocks" , "Transparent mineral" , "Semitransparent insulating mineral" .)