Ever looked up into the sky on a clear night, see a shooting star and think to yourself it resembled a trail of falling diamonds? Well you might not bee too far off, because apparently there are diamonds up there and some of them are falling to earth.
Space diamond, by: morningcupojoe.com
Only a few weeks ago we were told that scientists can now prove that there are diamond glaciers floating around on the oceans of Neptune and Uranus, and today we learned that two very special diamonds were found hiding inside the Havero meteorite that crashed to Earth in 1971.
But the meteorite diamonds are unlike the diamonds found on Earth. Which, I guess, makes sense, since if you're going to come crashing down through the atmosphere, you aught to be packing a little extra punch. And these “alien diamond,” according to the scientists researching them do. They are ultra-hard – much harder than their earthbound kin.
Could be nice to get some luxury gems over the city, don't you think?
According to the researchers, the super-hard diamond duo, which in fact are two small carbon crystals, were created when the graphite in the meteorite experienced the intense heat and pressure of entering the Earth’s atmosphere and the impact of crashing into the ground.
Nevertheless, and much like in the case of nearly any big guy nicknamed “tiny,” finding out exactly how tough the meteorite diamonds are is impossible at this point; since they're too small to test for precise hardness.
So how can the scientists be so sure that these diamonds really are that hard? Apparently, the researchers found them by using a diamond paste to polish a slice of the meteorite. The crystals were raised more than 10µm above the polished surface, which meant they were harder than the diamonds in the polishing paste. In fact, the little-big guys were unaffected when polished in every direction.
The scientists then applied an array of mineralogical instruments to the diamonds, including microscopy, spectroscopy and energy-dispersive X-rays among others, which allowed them to identify them as representing two new carbon polymorphs or diamond polytypes.
Photo Credit: FilanFilan