use black and gray colors, make the pattern be slow Add noise texture

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use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Add subtle reflection

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use black and gray colors, make the pattern be slow, ad a pinch of water ripple effect Subtle gradient shift

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use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Increase wave amplitude

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Stone Marble

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use black and gray colors, make the pattern be slow Add noise

edit