λύγδος
From LSJ
λέγεις, ἃ δὲ λέγεις ἕνεκα τοῦ λαβεῖν λέγεις → you speak, but you say what you say for the sake of gain (Menander, fr. 776)
English (LSJ)
ἡ,
A white marble, Peripl.M.Rubr.24; λύγδου λειότερον AP5.27 (Rufin.); οἷά τε λύγδου γλυπτήν ib.193 (Posidipp. or Asclep.); ἡ Παρία λ. D.S.2.52, cf. Mart.6.13,42.