A rare 10-carat blue fancy diamond ... carats have consistently commanded high prices at auction. The transformation of the “Mediterranean Blue” diamond into a polished gem followed a year ...

The 3-carat diamond price index dropped by 0.3% in April and by 0.9% year-to-date MOSCOW, May 7. /TASS/. Diamond prices surge dramatically in early April after announced customs tariffs in the US ...