New research has shown that diamonds could help doctors detect cancers in their earliest stages. Nestled inside a Magnetic Resonance Imaging (MRI) machine synthetic diamonds light up on scans, alerting doctors to the presence of cancer. Known as nanoscale the technology has been evolved by physicists at the University of Sydney. The diamonds do not switch on by themselves in the scans but do so upon some manipulation. “We’ve magnetised the atoms within the nano-diamond and this makes them light up on an MRI scan,” lead author Ewa Rej said.