Woman’s garden ‘stepping stone’ turns out to be an ancient Roman artifact – Livescience.com

A seemingly dull marble slab, used for 10 years as a stepping stone in an English garden, is actually a rare ancient Roman engraving, a new analysis finds. 
The discovery surprised its owner, who learned that the 25-inch-long (63 centimeters) slab a stone she had previously used as a stair while mounting her horse
dated to the second century A.D. and was worth about $20,400 (£15,000). 
However, no one knows how the marble masterpiece ended up in England. It was likely carved in Greece or Asia Minor…

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