verd-antique
/ˌvəːdanˈtiːk
/noun [mass noun]
1A green ornamental marble consisting of serpentine with calcite and dolomite.And the curves of the platform above the dolphins have delicate carved acanthus leaves finished in verd-antique (a green patina).
1.1Verdigris on ancient bronze or copper.
1.2A green form of porphyry.In the baths of porphyry and verd-antique you had waters cold or sulphurous at will.
Origin
Mid 18th century: from obsolete French, literally 'antique green'.