CAMAIEU, or CAMAYEU, a stone whereon are found various figures and representations of landscapes, formed by a kind of lusus naturæ, so as to exhibit pictures without painting. The word comes from camehua, a name the orientals give to the onyx, when they find, in preparing it, another colour; as who should say, a second stone. The Latins call it camæus; the Italians, camæo. It is of these camæaux that Pliny is to be understood, when he speaks of the manifold picture of gems, and the party-coloured spots of precious stones *.