Confidence votes 18. For the white through orange, it takes 4 or 5 wins. For the green through black, it takes about ten wins. I have heard in the end when you earn your black belt, the total wins is 88.
Sulfur is found in meteorites. R.W. Wood suggests that the dark area near the crater Aristarchus is a sulfur deposit. Sulfur occurs native in the vicinity of volcanos and hot springs. It is widely distributed in nature as iron pyrites, galena, sphalerite, cinnabar, stibnite, gypsum, epsom salts, celestite, barite, etc.
Sulfur is a common element, with many uses. Although most sulfur is extracted from sulfides, Native Sulfur, being common, is also used as a source. The fine specimens from Agrigento and Cattolico in Sicily, Italy, are highly sought by mineral collectors and command very high prices. Sulfur has many industrial uses.