ostracias
From LSJ
Cicero, Tusculanarum Disputationum, I.45.109
Latin > English (Lewis & Short)
ostrăcĭas: ae, m., and ostrăcītis, ĭdis, f., = οστρακίας, ὀστρακῖτις,
I a semigem, prob. hornstone or chalcedony, Plin. 37, 10, 65, § 177.
Latin > French (Gaffiot 2016)
ostrăcĭās, æ, m. (ὀστρακίας), ostracie, sorte de pierre précieuse : Plin. 37, 177.