Have you heard of X-Ray diamond sorting? If not, be my guest and travel behind the scenes to an alluvial diamond-mining operation overseen by our friends at Alrosa. They have provided an amazing video example of this efficient method of separating the wheat from the chaff, as it were.
A peek behind the scenes from IGI Worldwide
When the Great Imperial Crown was made for the coronation of Catherine the Great in 1762 the court jewelers believed they were topping over 5,000 diamonds and pearls with an enormous 398 carat ruby. But it was never so. They had been fooled by a charming imposter.