Sculpture technique revealed by a graduate on Sabbath with calmness (3,6)
I believe the answer is:
bas relief
'sculpture technique' is the definition.
'bas relief' can be an answer for 'sculpture' (I've seen this before). I am unsure of the 'technique' bit.
'a graduate on sabbath with calmness' is the wordplay.
'a graduate' becomes 'BA' (someone with a Bachelor of Arts degree).
'on' says to put letters next to each other.
'sabbath' becomes 's'.
'with' means one lot of letters go next to another.
'calmness' becomes 'relief' (I can't justify this - if you can you should give a lot more credence to this answer).
'ba'+'s'+'relief'='BAS-RELIEF'
'revealed by' acts as a link.
Can you help me to learn more?
(Other definitions for bas relief that I've seen before include "projected figure" , "less outstanding work" , "work of art" , "Moore may have produced this" , "Sculpture" .)