This degree offers the highest level of employment relevance but the lowest level of transferability. The AS is an Associate of Science. It is usually intended to be career field preparation in a field that does have a related bachelor's degree. The AS in Nursing or Business Administration is an example. Some graduates will go right into the workforce and some will go on for more education.
Opal is one of the world's most beautiful and precious gemstones, predominantly found in Australia. It is one of only six types of precious gemstones found on planet earth, sharing prestigious company with diamonds, rubies, sapphires, emeralds, and pearls.ver 95% of the world's precious opal comes from Australia, and opal is Australia's national gemstone. While several different types of opal are present in nature, there are two main varieties-precious opal and common opal or potch. Precious opals exhibit the characteristic play-of-colour, and is comparatively rare.
Mexican Opal was born in fire, in the ancient volcanoes of Mexico. Fire opal forms when water seeps into silica-rich lava, filling seams and hollows. Under heat and pressure, the silica forms a solid gel, trapping the remaining water within its structure. Small pebbles of fire opal are found embedded in lava flows. Fire opal is found in Central America, South America and the United States (Idaho and Oregon), typically within cavities formed in volcanic lava flows. The vast majority is from Mexico. Mexican opal is mined in the Mexican states of Queretaro, Hidalgo, Guerrero, Michoacan, Julisio, Chihuahua and San Luis Potosi. The most important mines in Queretaro were discovered in 1835 and are still producing today.