A treasure trove of emeralds, rubies and sapphires buried for decades on a glacier off France’s Mont Blanc has finally been shared between the climber who discovered them and local authorities, eight years after they were found. The mountaineer stumbled across the precious stones in 2013. They had remained hidden in a metal box that was onboard an Indian plane that crashed in the desolate landscape some 50 years earlier. In September 2012, India took possession of a bag of diplomatic mail from a Boeing 707 flying from Mumbai which crashed on the south-west face of Mont Blanc on 24...