Many statuetes of Isis are done in this metal. Civilizations which possesed the secret and the materials for bronze triumphed over others, and so it is a particularly appropriate metal for Isis Victrix (The Victorious)
-Copper
The Egyptians releated copper to Hathor and Isis because of it's natural tendancy to oxodize ('bloom') in a rainbow of colors, and it's association with fertility. The Egyptians also used copper oxides for their eyemakeup. As a Goddess of Isis-Hathor, it also carries an aggressive aspect. In the story of the tribulations between Horus and Set, Isis forms a copper harpoon and uses it on Set,
-Gold
Gold has strong healing properities, which was used with Isis as Her role as the Great Physcian. The Thet, or Set amulet, also known as "The Knot of Isis" was occasionally made of gold instead of it's more usual material of red stone or glass.
-Silver
Silver was often used for the jewelry of the Priestesses of Isis, and to adorn the statues of Isis as well. Many cities also issued silver coins bearing the image of Isis.