MINERAL AND ENERGY RESOURCES IN INDIA
MINERALS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ruby
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granite
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sandstone
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marble
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Detailed explanation-1: -Ruby is gem-quality red corundum. The color comes from traces of chromium. All other color varieties of gem-quality corundum are referred to as sapphire. Most gemological authorities expect a medium to medium dark-red color tone in a ruby.
Detailed explanation-2: -A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires.
Detailed explanation-3: -The most famous ruby was originally mined in Burma, the Sunrise Ruby was eventually set by Cartier into a ring along with 2 diamonds weighing a total carat weight of 5 carats. In 2015, Sotheby’s put the ring up for auction, where it sold for a whopping $30.42 million dollars to an anonymous Swiss buyer.
Detailed explanation-4: -Diamonds, emeralds, rubies, and sapphires are all considered to be precious, and thereby, the most valuable and most desirable. All other gemstones are considered semi-precious.
Detailed explanation-5: -Introduction. Sapphires and rubies are both gem varieties of the mineral corundum.