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.
As a combination of the color blue and a little yellow, turquoise fits between green and blue on the color scale. The color turquoise radiates peace, calmness and tranquility through the blue color, balance and growth through the green color, with an uplifting energy from the color yellow. Turquoise recharges our spirits during periods of mental stress and fatigue, and removes the feeling of loneliness.