Pyrite is the classic "Fool's Gold". There are other shiny brassy yellow minerals, but pyrite is by far the most common and the most often mistaken for gold. Pyrite is so common in the earth's crust that it is found in almost every possible environment, hence it has a vast number of forms and varieties.
The name "pyrite" comes from the Greek word "pyr" which means "fire", in obvious reference to its golden yellow color.
Agate is a type of chalcedony, usually at least slightly translucent. It forms in concentric layers in a wide variety of colors and textures. Agate has a hardness of about 7 on the Moh's scale and agate cabochons take a great polish. The name "agate" is derived from its occurrence at the Achates River in southwestern Sicily.
Pyrite increases vitality and gives one a boost. It enhances willpower, assist in overcoming bad habits, and established new patterns of health and positive energy. Agates are said to be stabilizing, calming and strengthening. What a powerful combination!