Rocks.vs.Minerals

Let's learn about rocks and minerals

Gneiss

Gneiss is a high grade metaphoric rock, meaning that it has been subjected to higher temperatures and pressures than schist. It is formed by metamorphosis of granite, or sedimentary rock. Gneiss displays distinct foliation, representing alternating layers composed of different minerals.

Sandstone

Sandstone(sometimes known as arenite) is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains. Most sandstone is composed of Quartz and/or feldspar because these are the most common minerals in the earth's crust.
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Emerald

Emeralds are fascinating gemstones. They have the most beautiful, most intense and most radiant green that can possibly be imagined: emerald green. Inclusions are tolerated. In top quality, fine emeralds are even more valuable than diamonds.
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Hiddenite

Hiddenite is an unincorporated community and census-designated place in east-central Alexander County, North Carolina. The population was 536 at the 2010 census. It is part of the Hickory–Lenoir–Morganton Metropolitan Statistical Area and founded in 1913.
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Peridot

My birthstone is peridot.(/ˈpɛrɨdoʊ/ or /ˈpɛrɨdɒt/) is gem-quality olivine. Olivine is a silicate mineral with the formula of (Mg, Fe)2SiO4. As peridot is the magnesium-rich variety (forsterite) the formula approaches Mg2SiO4.