Blue diamond

Blue Diamond is a type of diamond that contains trace amounts of boron that give the gemstone its blue color. The boron atoms intermix with the carbon structure of the diamond, absorbing light in the red, green, and yellow spectrum, and reflecting the blue light to the observer.

History

The first known blue diamond was the Hope Diamond, discovered in India in the 17th century. It was originally owned by King Louis XIV of France but was stolen during the French Revolution. The Hope Diamond is now housed in the Smithsonian Institution in Washington, D.C.

Formation

Blue diamonds are formed deep within the earth's mantle, under extreme heat and pressure. The presence of boron during the diamond's formation gives the diamond its blue color. The intensity of the blue color varies depending on the amount of boron present during the diamond's formation.

Value

Blue diamonds are among the rarest and most valuable of all diamonds. Their value is determined by the intensity of the blue color, the clarity of the diamond, and its carat weight. The most famous blue diamond, the Hope Diamond, is valued at over $200 million.

Notable Blue Diamonds

In addition to the Hope Diamond, other notable blue diamonds include the Blue Moon Diamond, which sold for $48.4 million in 2015, and the Heart of Eternity Diamond, a 27.64-carat diamond that is one of the most famous diamonds in the world.

See Also

• Diamond
• Boron
• Hope Diamond
• Blue Moon Diamond
• Heart of Eternity Diamond

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