Westminster Cathedral, the principal Roman Catholic cathedral in Britain, is decorated in the Byzantine style with marble and mosaics. It has over a hundred different varieties of marble from twenty-five countries on five continents, more than any other building in the country. Many of the marbles are ancient. Others are from quarries rediscovered and reopened in the nineteenth century.

With the help of almost one hundred illustrations this book identifies and describes these beautiful natural stones and relates their fascinating history.