Agate is made mostly of quartz. It occurs in a wide range of colors, which include brown, white, red, gray, pink, black, and yellow. The colors are caused by impurities and occur as alternating bands within the agate. In Jewelry making many agates are dyed to a specific color. In the decorative arts agate it is used to make ornaments such as pins, brooches or other types of jewellery, cabochons, beads and carvings. The spiritual healing properties of agate are said to be growth and stability.