how to remove the water & coffee stains?

how to remove the water & coffee stains? Images

how to remove the water & coffee stains?

how to remove the water & coffee stains? Description

My whole kitchen is travertine & the island (http://maplered.com) is the worst.  Our bathroom Counter (http://GialloFiorito.com) s are the same Marble (http://www.lightemprador.com) !  HELP!!  there are many water rings, drops, and (http://maplered.com) a coffee cup ring.  How do I clean them & seal them?

Multicolor Red

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Granite China

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