Note 2493 — BOOK XXXVI. THE NATURAL HISTORY OF STONES.
John Bostock translation
The black marbles, Ajasson remarks, are comparatively rare. He is of opinion that the colour of the Lucullan marble was the noir antique of the French, and says that it is to be found at Bergamo, Carrara, Prato in Tuscany, and near Spa in Belgium.