Which descriptor indicates a pure composition among super deep diamonds?

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Multiple Choice

Which descriptor indicates a pure composition among super deep diamonds?

Explanation:
Think of purity of composition as how clean the crystal lattice is. “Pure” signals that the diamond’s composition is essentially carbon with very few impurities, which is what you’d expect from a truly pure crystal. Impurities like nitrogen or boron would introduce color or lattice defects, so they aren’t described as pure. Other descriptors describe shape, size, or alteration history—irregular refers to crystal form, large to size, and resorbed to dissolution/recrystallization features. So, the descriptor that best indicates a pure composition in super deep diamonds is the one that denotes purity: pure.

Think of purity of composition as how clean the crystal lattice is. “Pure” signals that the diamond’s composition is essentially carbon with very few impurities, which is what you’d expect from a truly pure crystal. Impurities like nitrogen or boron would introduce color or lattice defects, so they aren’t described as pure. Other descriptors describe shape, size, or alteration history—irregular refers to crystal form, large to size, and resorbed to dissolution/recrystallization features. So, the descriptor that best indicates a pure composition in super deep diamonds is the one that denotes purity: pure.

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