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Information about gems
Some of the most famous gems are crystals. Crystals have flat sides, called faces. Crystals are made up of atoms. In crystals the atoms are arranged in neat patterns. Most crystals form under the earth. Sapphires form when minerals get so hot that they melt. Other gems such as Opals form when minerals dissolve in water. There are also Pearls. Pearls are made when a grain of sand gets trapped inside an oyster's shell. Coral and Amber are organic gems. Coral is made of sea creature's skeletons, while Amber is made from the fossils of insects caught in sap. The gems that are made underground are so small and hard to find that mining is done by hand. To find a gem miners must chip and cut the rock. When miners find a gem it looks dull and ugly. It is also bumpy. Gems are often cut by gem cutters so they can show of how pretty they are. When the gem comes out the value of the gem is determined by how hard it is and a system called the four c's. The four c's stands for cut, carat weight, color, and clarity. These are all things to know about gems.
Article posted November 8, 2010 at 01:57 PM •
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