callais, idis, f., = καλλαΐς, a sea-green precious stone, the turquoise, Plin. 37, 10, 56, § 151 (in Sol. 20 called callaica).

—Hence, callainus, a, um, adj., turquoisecolored: lacernae, Mart. 14, 139.

—Subst.: callaina, ae, f., a precious stone of a pale-green color, Plin. 37, 8, 33, § 110 sq.; 37, 10, 54, § 147; cf. id. 37, 10, 56, § 151.