Rare Blue Diamonds Lurk Deep In Earth's Core (washingtonpost.com)

Scientist believe they now know how extremely rare blue diamonds are formed. After studying 46 of the gems, they found that blue diamonds are formed as deep as the transition zone between the planet's upper and lower mantle (Warning: source may be paywalled; alternative source) -- far greater depths than other diamonds, some deeper than 410 miles. The Washington Post reports: Just 1 out of 200,000 diamonds are blue. Like all diamonds, they are made when carbon comes under intense pressure and extreme heat deep inside the Earth. As they form, they can trap tiny bits of rock inside -- like fossils in amber. "Diamond is an extraordinary container, a time capsule," said Steven Shirey, a geochemist at the Carnegie Institution for Science in Washington. Shirey and his colleagues used lasers to examine the diamonds' imperfections -- slivers of embedded rock -- at the Gemological Institute of America. The researchers suggest that boron in the ocean floor was pushed down when plates that make up the Earth's crust collided. The element allows the stone to absorb some red light, so the diamond looks blue. The findings were published in the journal Nature.

Comments

Re: Now all they have to solve...

[PopeRatzo]

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Paying for it doesn't count. Especially when you pay way over market value. You really think $130k is a well-negotiated price for sex with a washed-up porn star? What counts is the quality of your offspring, and on that count, President Trump fails the test. Tell me if you think any of the Trump children would be able to support themselves without trading on their daddy's celebrity.