Firestone

This is a short overview. For the background — history, value over time and notable mines — see Firestone →

Reigate stone: a calcareous sandstone of the Upper Greensand of east Surrey, worked underground between Reigate and Godstone from Roman times to the twentieth century. Soft enough to cut freely when freshly raised and hardening on exposure, it was the building stone of medieval London, used at Westminster, Windsor and Old St Paul's, and its resistance to heat - the property that named it - made it the stone for furnace and oven linings.