Block a view of a certain conversion (9)

I believe the answer is:

damascene

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'a certain conversion' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'block a view' is the wordplay.
'block' becomes 'dam' (damming is a kind of blocking).
'view' becomes 'scene' (synonyms).
'dam'+'a'+'scene'='DAMASCENE'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for damascene that I've seen before include "inlaid work" , "ornament" , "Rich ornamentation on metal" , "Syrian" , "Middle Eastern" .)

I've seen this clue in The Times.

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