the researchers concluded that the decorated stones were deliberately placed there around 2900 B.C. The vast majority of the stone plaques were made from black shale — a dark, flaky sedimentary ...
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What Color Is Slate? "Moody, Versatile, and Just a Touch Edgy", but Is This Gray-Tone Actually on Trend?W hen I think of the color slate, I think of the sleek stone, one that's a little rough around the edges, and perfect for ...
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