How it behaves under traffic and over time.
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A long time, if the finish is maintained. The stone is Mohs 3 and it will scratch, but the stone itself does not wear out in a building's life — the polish does. In a hotel corridor the polish is normally restored rather than the floor replaced.
It is measured under ASTM C1353, and the published figure for a marble at this density and absorption is a low one. In practical terms: the stone wears at the polish, not in the body, and a busy floor is restored rather than replaced.
The stone is durable and the finish is not, and a busy floor is a maintenance item rather than a material question. In a hotel corridor the polish is restored every few years; the slab underneath is the same slab in year twenty.
A stone this dense does not fade in the way a dyed material does. What changes is the surface: the polish goes, the honed finish goes duller, and an acid mark stays. A sealed floor in a shaded room looks much the same in year ten.
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