Amsterdam Black Diamond - Largest Monocrystalline Natural Black Diamond in the World

Cut from a 55.85-carat rough black diamond discovered in South Africa in 1972, the Amsterdam black diamond is a 33.74-carat, pear-shaped, fancy black diamond, christened in honor of the 700th anniversary of the City of Amsterdam

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Amsterdam Black Diamond - Largest Monocrystalline Natural Black Diamond in The World, PDF, Gemstone

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Out of all the colours that natural diamonds can be, i.e., white, green, blue, yellow, red, black, etc., what colour in natural diamonds are the most common and least common? - Quora

Amsterdam Black Diamond - Largest Monocrystalline Natural Black Diamond in The World, PDF, Gemstone

This huge black diamond just sold for £3.1 million. No one knows where it came from.