Splotchy Blots & Rings on Countertop (Kitchen Island)
Water spotting or etch rings on a countertop surface and waterfall edge.
Marble, travertine, onyx, and limestone are all stones on a calcite basis, and therefore unstable to PH active liquids, especially acids. When acid (vinegar, fruit juice, wine, etc.) or high-alkaline detergent falls on polished marble, they dissect the marble at the contact area.
After that, the corrosion remains on the surface, which looks like watermarks or a ring. Attempts to remove such “stains” with stain removers will be a waste of time, as these are not stains, but corrosion marks, and they can be eliminated only by countertop re-polishing.
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