Note 729 — BOOK XXXIII. THE NATURAL HISTORY OF METALS.647
John Bostock translation
From the “Trinummus” of Plautus, A. iv. s. 4, we learn that the ring worn by slaves was called “condalium.” From the “Truculentus” of Plautus we learn also that these rings were sometimes made of bronze. The “jus anuli,” or right of wearing a gold ring, was never conceded to slaves.