Metallics

The human body contains traces of most known metals, including gold, silver, copper, zinc, iron, and uranium. We need iron to breathe, iron and copper to form blood, and the other metals to assist in the physiological activities that build our bodies and keep us alive.

Archeological studies suggest that humans first used metals to make tools and weapons. Metal jewelry was being produced soon after. No one can confidently say when humans first made metal jewelry for therapeutic or ceremonial purposes, but there is evidence that the ancient Chinese and Egyptians (among others) were wearing metal amulets for health and protection before 4,000 BCE.

The types of metals generally used in jewelry today include gold, platinum, silver, copper, brass, bronze, stainless steel, and pewter, Platinum, gold, and silver have been designated "precious" metals, while others are labeled as "semi-precious." These classifications are based on criteria similar to those imposed on gemstones - rarity, hardness and durability, brilliance, and desirability.

Contemporary jewelry is also made from a variety of metallic minerals, such as pyrite, magnetite, and hematite because of their superior luster, which makes them highly reflective and shiny. Pyrite and hematite are also popular for their ability to absorb harmful electromagnetic energy.