Photograph the stone in your pocket, hear where it's been
picked one up on a beach in wales and photographed it on the drive home. got back what it probably is, roughly how old, what those white lines across it are, and how it got round. it is four hundred million years old and it was in my coat pocket next to a receipt.
Here is a photograph of a stone I picked up. Tell me what it is and where it has been.
Under 400 words, plain and unhurried:
1. WHAT IT PROBABLY IS: your best identification from what's visible — colour, grain size, how the light sits on it, any banding or crystals. Give one mai
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