Boron is the impurity that colors the rare blue diamonds found in nature — and is why many "memorial diamonds" come out blue, too. Source: Gemological Institute of America The other 1% contains ...

Anothising, isn’t it? It has been known that its surface might potentially be covered in diamond and graphite rather than the ...

A 5.72-carat fancy intense blue diamond sold for more than $ ... sold for $415,800 This was followed by a rock crystal and diamond faceted cuff bracelet, circa 1934. The Instagram-friendly jewel ...