Silver
Silver is a chemical element with symbol Ag (from the Latin "", derived from the Proto-Indo-European "h₂erǵ": "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.
Coat of arms of Perth
The shield of the arms contains the red cross of St. George as shown on the flag of England. The top-left quarter of the shield and the supporters are black swans which are common to the area and significant to the original name of the Swan River Colony. Black swans are also shown on the Western Australian arms and flag. The fourth quarter of the shield is taken from the arms of Perth, Scotland, the city after which Perth is named. The helm is a gold brickwork crown, indicating these arms are for a municipality, and the supporting swans wear similar crowns around their necks. The motto, "Floreat", is Latin for "flourish" or "prosper".