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This is a short overview. For the background — history, value over time and notable mines — see Serpentine →
A dark green, sometimes mottled decorative rock, easily cut and polished, formed by the alteration of magnesium-rich igneous rock. In Britain it is essentially unique to the Lizard Peninsula in Cornwall, where it was worked into mantelpieces, pillars and ornaments rather than used structurally.
| Mine | Region | Worked |
|---|---|---|
| Poltesco Serpentine Works | Cornwall | From early 18th century–1893 |
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