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Precious stones, diamond facts for kids

Precious stones are minerals or stones which are highly prized for their beauty. They are used in jewelry. Precious stones are dug up from the ground. They become beautiful only after skilled workers grind them into shape and polish them to bring out their brilliance or glow.

The diamond, the hardest known mineral, is among the mostly highly valued of all precious stones. It is a pure form of carbon. The carbon was probably changed into diamonds by great heat and pressure in the Earth's crust millions of years ago. Most diamonds are mined in Africa. The most precious diamonds are colorless.

Precious stones, diamond facts for kids Precious stones are highly valued because of diamonds use in jewelry. The diamonds (left) come from South Africa, where some of the finest of these magnificent gems have been found. The Imperial State Crown (right) contains many superb stones. It is part of the British Crown diamonds and jewels

Other precious stones are valued according to the quality of their color. For example, rubies, which come largely from Burma, Ceylon and Thailand, are blood-red. Many fine blue sapphires have been found in Thailand. Beautiful green emeralds have been found in Colombia, India, Rhodesia and Russia. Imitation stones are now widely made from a soft glass. Imitations are easily scratched.

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