what are the main ingriediants in granite polish?

Answer 1

http://www.ntc-stone.com/tips.htm
"Most craftsmen will use diamond abrasives to hone the stone, then switch to a powdered abrasive to achieve the final polish. Powdered abrasives contain superfine crystals of aluminum oxide or tin oxide. "

Older 1894 method: abrasive material used for grinding granite is either chilled-iron globules, steel emery, or crushed steel. A coarse grade is used at first, then a finer kind, and for the last grinding fine emery is often used. Polishing is done in much the same way as grinding, except that a felt-covered disk is used in place of an iron one, and putty powder mixed with a little water, instead of coarser grinding materials. http://www.cagenweb.com/quarries/articles_and_books/us_geo_survey1894_granite_2.html