List-of-birthstones.com Website Review

This Earth started as a lump of hot gas (the same way as the stars, sun and planets) with temperature of millions of degrees Fahrenheit, and then it liquefied, froze from the outside and formed a hard outer shell (crust). It is on this stone shell or crust that living things existed: simple forms of an*mal (600 million years ago), land plants (475 million years ago), amphibians and reptiles (about 300 – 400 finally human (about 200,000 years ago, and now is growing in population of billions). The age of Earth is estimated to be between 4 – 5 billion years old. Inside the earth there is a hot liquid core of molten rock, and on the outside you will find a hard crust. The crust on the earth is just like the shell on an egg (if you compare the earth to an egg). The crust is made up of rocks and minerals. Most gemstones are found in this crust of the earth (the earth’s top layer) with a depth of 3 – 25 miles (5 – 40 km). The earth’s crystal were mostly formed millions of years ago. Gemstones are often what people mean when they Below the earth’s crust there is another layer which is the mantle. Peridot and diamond are one of a few gemstones that form in the mantle of the earth, which represents 83% of the earth’s volume. The earth’s mantle consists mostly of magma or melted rock (3000 km All gemstones originally mined in the crust. The crust itself is made up of 3 kinds of rocks: igneous, metamorphic and sedimentary. Those technical terms refer to the way in which rocks formed. Certain gemstones are as*ociated with one type of rock while others with (igneous means made from heat or fire). Through the volcanic pipe, the magma from the mantle rise to the crust and if it reaches the earth’s surface, then the liquid is called lava, and it will solidify into igneous rocks. When the lava cools too quickly on the surface, then obsidian is created. But if the magmatic mas* slowly cools in the crust, then it crystallize to form minerals. When the