Below is a marble fireplace parts diagram from a typical mid-Georgian style fireplace. The names of the parts are also applicable to fireplaces from many other eras.
Anatomy of a fireplace
This diagram was created from the below one-off marble fireplace available at http://hurleymarble.co.uk/portfolio/blue-john-chimneypiece/
Made in the UK by experienced stonemason Matthew Hurley, this Georgian style fireplace is available for sale at a fraction of the cost of an antique equivalent. The perfect choice for a large Georgian home that needs an impressive central focus to the living area, that will almost certainly become an antique of the future.