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Q. Which of the following are found in Diamond and Emerald?
Answer: Carbon and silicon
Notes: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium.

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Question Number: 26 in Geology Geological Time Earths Internal Structure in above course in App.