If you know anything about diamonds it's probably the 4 Cs - Cut, Clarity, Color, and Carat Weight. There's plenty of information about the 4Cs which can be found online and learned in conversations with professionals and enthusiasts, but prioritizing them is not always easy. Here are my suggestions.
4,676 carats of rough diamonds from Lucapa's Mothae kimberlite mine in Lesotho have been sold in Antwerp. Commanding a record price of $1,198 per carat, the parcel contained a number of larger pieces, including the 101 carat D colored crystal unearthed at the end of 2020.
Different 1.00 carat diamonds can look different sizes. This is because we typically view diamonds from a single direction: Above. Imagine cooking a 1 pound meatball and a 1 pound pancake. On your scale they weigh the same. But the meatball's weight is distributed in a deeper geometry.
Nature's birthmarks? Or unsightly specks? What do you think? There are many different philosophies regarding natural diamond and gemstone clarity. What do you think? Should a diamond be allowed to have few blemishes, or should it be as clean as the pure driven snow?
The valuable asteroid composed entirely of iron and nickel drew to within 1.6 astronomical units (AU) of Earth over the weekend. If you're in the USA grab your telescope, escape light-pollution, find an elevated position and look to the north. 16 Psyche will be in the constellation of Taurus tonight.
Our planet's supply of diamonds were produced by four different processes. One took over a million years to achieve results. The next have been working in laboratories and factories, with increasing success, since the 1950s. But until this month man had never replicated that final process.