? an agate with green wave-like markings.

A lead-coloured variety of agate.

(See quots.)

The same as agate jasper: see jasper, n.1 1.

(a) any of various semi-precious stones likened to the peacock's plumage in colour, pattern, or iridescence, such as malachite or varieties of agate…

a variety of agate in which inclusions, typically of manganese oxide, produce black, brown, or esp. greenish dendritic forms resembling moss.

attributive. Designating varieties of ornamental stone distinguished by markings likened to the outline of ruined buildings, as ruin agate, ruin j…