: to make (something) more attractive usually by putting something on it.
There are several types of mercury. They include metallic mercury, and both inorganic and organic mercury compounds. Many of these forms are found in our environment, however, the most common natural forms include metallic mercury, mercury sulfide, mercuric chloride, and methylmercury (http://www.atsdr.cdc.gov/toxprofiles/tp46.html).
Mercury is an element that is found all over the earth, in soil, rocks, and water. Even trace amounts can be found in the air. The largest deposits on earth are as cinnabar (mercuric sulfide). Mercury exists in several forms such as a liquid metal (quicksilver), as a vapor, and in compounds (organic and inorganic).