a poem
Jonathan Swift's "A Modest Proposal"
A polished piece refers to a finished work that has been refined and perfected through editing, proofreading, and revising. It is free from errors, flows smoothly, and is ready for publication or presentation.
Jewellery stamping is when a piece of jewellery is stamped to identify the type of metal which has been used; for example "750" means the metal is 18 carat gold.
A short story that has been workshopped and revised. (Apex Sociology)
I believe you are describing a prism.
boilers
a mirror due to the fact of being reflective.
Polished
gears on heavy equipment
A polished diamond is an example of complete diaphany, in that you can see through it.
black polished granite is the best and long lasting.
large boiler system