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double color stone

​#naturalstone, #geologyrocks, #uniquebeaches, #mineralcollecting, #naturephotography This unique two-toned stone is a fascinating example of natural geological artistry, likely formed through a process called differential weathering or mineral staining. The distinct contrast between the smooth, greyish inner core and the rugged, reddish-brown outer "crust" suggests that the outer layer may be enriched with iron oxides or composed of a harder sedimentary material that protected the inner stone. These types of bicolored rocks are often found in riverbeds or arid regions where environmental elements have stripped away parts of the surface to reveal a different mineral composition underneath, making them highly sought after by collectors for their aesthetic and sculptural qualities.