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.
Works well with Chrysocolla, best with Silver. Protects and blesses the user. One of the most versatile of the POWER STONES, which is why Native Americans honor it. Turquoise works at the throat Chakra enhancing communication skills. Those seeking a profound healing of the spirit and soul should wear turquoise. Opens the heart Chakra for giving/receiving. Ancient absorber of negativity. Helps one develop natural powers. Excellent grounding stone.