Nowadays greatest coral gemstones available today are varieties of Corallium rubrum, a very particular pink to red-colored varieties of the coral genus. In the trade, the Corallium rubrum is seldom applied to as 'noble coral' and is estimated to be the most sought-after type of coral for jewelry.Natural Citrine does not hold or collect negative energy, but rather transmutes, dissipates, and grounds it, making it remarkably protecting for the environment. It works out problems on both the physical and subtle levels, transforming contradictory thoughts and feelings into concrete ones. It is one of only two crystals on Earth that never needs to be received or cleansed. The other is Kyanite. Citrine is a transparent, yellow variety of Quartz, ranging in color from pale to golden yellow, honey, or almost brown, and may contain rainbow or sparkle inclusions. The name comes from the French word citron, anticipating lemon. It was used as a gem in Greece as far back as 300 B.C., and because of its color, is seldom falsely referred to as Gold Topaz, Madeira or Spanish Topaz, or Safranite. Much of the financial Citrine on the market is heat-treated Amethyst or Smoky Quartz that produces an enhanced Citrine color, usually a more profound amber or orange-reddish shade. Most Natural Citrine is a pale yellow color."