Note 793 — BOOK XXXIII. THE NATURAL HISTORY OF METALS.647
John Bostock translation
The golden denarius was known also as the “aureus” or “gold coin.” It was worth 25 silver denarii. As to the modern value of the money used by the ancients, see the Introduction to Vol. III. The golden denarius is mentioned also in B. xxxiv. c. 17, and in B. xxxvii. c. 3.