Blue diamonds form 400 miles beneath the Earth's surface, research shows SCIENTISTS probing the origins of some of the world's most precious diamonds have revealed previously hidden secrets about their fiery birthplace deep underground. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:SpaceX milestone: Israel to launch its FIRST EVER moon mission THIS WEEKNASA asteroid tracker: 1,500FT asteroid is headed for Earth approach TOMORROW at 60,000MPHNASA announcement: Hubble Telescope spots ‘SMOKING GUN’ - young star DISCOVEREDSupermoon effects: Will the Full Moon make you CRAZY tonight? What is Lunar Lunacy?Supermoon 2019: Biggest Full Moon of the year coincides with THIS astronomer's birthdaySupermoon 2019: Best way to photograph the supermoon TONIGHT