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Diamonds are among nature’s most precious and beautiful creations.
Colorless diamonds are scarce—most diamonds have tints of yellow or brown.
Factors used to describe diamonds: Clarity, Color, Cut, Carat Weight
The rarity of one or more of the 4Cs can affect value.
The crystal shape of a gem diamond is often the octahedron.
Trigons—little triangular depressions—occur only on octahedral faces.
Diamond’s growth marks help experts separate diamonds from simulants.
Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.
Dazzling brilliance. Captivating color. These are the planet’s most valued gems.
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.
Citrine is the transparent, pale yellow to brownish orange variety of quartz.
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