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Theyre sparkly with varied hues. You might see them in a beautiful necklace, a breathtaking ring, or even in a computer. Theyre gems. Gems are some of Earths most precious resources, and some of them are millions, or even billions, of years in the making. This detailed text, accompanied by colorful photographs, informs readers about the remarkable processes that take place under the surface of Earth to form different kinds of gems. Theyll also learn how some gems are mined, while others are replicated in laboratories. Future lapidaries will also find out how they might find and polish gems for themselves.

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