fine copper: Heb. yellow, or shining brass, The Syriac renders, nechosho korinthyo tovo:, "good Corinthian brass;" so called from the brass found after the burning of Corinth by Lucius Mummius, which was, as is generally supposed, brass, copper, silver, and gold, melted together. Sir J. Chardin, however, in a manuscript note, cited by Harmer, mentioned a factitious metal used in the East, and highly esteemed there, which might probably be of an origin as ancient as Ezra. He says, "I have heard some Dutch gentlemen speak of a metal in the island of Sumatra, and among the Macassars, much more esteemed than gold, which royal personages alone are privileged to wear. It is a mixture, if I remember right, of gold and steel, or copper and steel." He afterwards added, "calmbac is the name of this metal, which is composed of gold and copper."
precious: Heb. desirable, Lamentations 4:2