The Glittering World of Gems: Incredible Emeralds

The Glittering World of Gems: Incredible Emeralds — page 1 — Emeralds are bright green gems They form deep inside the earth when hot magma cools These transparent crystals are made of the mineral beryl This mineral is generally clear and almost colorless The reason emeralds are green is because beryl mixes with the element chromium as it cools It takes millions of years for emerald crystals to form 4 How Emeralds Are Made The first emerald mines existed in Egypt more than 5,000 years ago Mining for Facts

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