Hillman Hall of Minerals and Gems

April: Diamond

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Diamonds are best known as brilliant, colorless stones of great beauty and durability, but diamonds also come in a wide range of colors. Yellow and blue are popular, and green, pink, violet, and black are available. These are known as “colored” or “fancy colored” diamonds. Rich, red diamonds are the most expensive gems in the world.

Diamonds have been produced from a number of localities around the world including Africa, India, Russia, Brazil, Colombia, and Australia. Most recently, large numbers of fine gems have been produced from Canada. In the United States, gem diamonds have been found in Arkansas, Colorado, and Michigan and in glacial deposits throughout the northern states.

Antique diamond & ruby necklace
Photo by Debra Wilson

Necklace

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