The CPI takes a constant basket of goods and sees how the price changes from year to year. If the price of the basket of goods increases, then there is price inflation. If the price of the basket of goods decreases, then there is deflation.
Copper and tin mainly make up bronze but other elements include phosphorus, manganese, silicon and aluminium.
For jewelry, bronze is an affordable metal with a warm, rich color. Bronze is an alloy that consists of a mixture of copper and tin, approximately 90% copper and 10% tin. Producing bronze is a less toxic process than producing brass. Brass is a combination of copper and zinc, and the manufacturing process often produces zinc oxide which is toxic. Our natural bronze styles are solid bronze. Our silver plated bronze and gold plated bronze both have a solid core of bronze that is then plated in fine silver or in gold.