There are two kinds of sodium lights: Low Pressure (LPS) and High Pressure (HPS). These lamps are mostly used for street lighting as well as industrial uses. The lamp works by creating an electric arc through vaporized sodium metal.
Enhanced Turquoise. Enhanced Turquoise is a natural stone that has only been treated with either chemicals and heat, or just heat to enhance the color and harden the stone. This type of treatment keeps the color from fading over time and makes more of the harder turquoise available for the market.
Number 8 Turquoise Jewelry, Number 8 Turquoise Mine. Number 8 Turquoise jewelry is a highly prized stone and is used in all types of traditional, contemporary, and Native American jewelry. It is valued for its trademark spider-web matrix with various shades of gold, black, and brown lines that lace through its unique powder blue stone.