Minerals are typically formed when molten rock, or magma, cools ... comprised of aluminum oxide. The red color is caused by traces of chromium. Corundum also forms sapphire in many colors ...
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These 5 colorful mountains give the feeling of another world, no less than heaven for touristsFor people who love to travel, mountains provide both comfort and excitement. Greenery can be seen on mountains during summer ...
The most colorful of all may just be rainbow obsidian, which features an array of iridescent colors, including shades of green, purple, and blue. Colorful, sure, but we’d say it reminds us more ...
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