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Diamond is a solid form of carbon with a diamond cubic crystal structure. At room temperature and pressure it is metastable and graphite is the stable form, but diamond almost never converts to graphite. Diamond is renowned for its superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, it has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial applications of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.

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Diamond isn't actually the hardest substance on earth. There are two which are harder. The first being wurtzite boron nitride is 18% harder than a diamond and is only found near the site of extreme volcanic eruptions. The second being lonsdaleite (Not sure how to pronounce it though.) which is 58% harder than diamonds and only found at the site of a meteor impact. Naturally both are very much not common. Site: The Perfectly Useless Book of Useless Information

Contributed by Clayton Kemery


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Colorado Woman finds 8.52 Carat Diamond in Arkansas

Bobbie Oskarson was at Arkansas' Crater of Diamonds State Park when she dug up what she thought was a quartz crystal but it turns out it was really the 5th largest diamond discovered in the park! Oskarson decided to name it the "Esperanza Diamond" in honor of her niece and the Spanish word for hope. She's going to keep it!

Contributed by Sam Feldstone

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