Next time you buy a glittering fancy coloured diamond weighing one carat and above do not forget to verify its colour as natural. As you may land up buying a high pressure/high treatment (HPHT) colour ...

Gemmological services and technology developer and provider Diamond Services will in September unveil a mini Raman Spectrometer that can accurately detect high-pressure high-temperature (HPHT) and ...

The Swiss Gemmological Institute SSEF has developed the Automated Diamond Spectral Inspection (ASDI) – a device which can analyse very large quantities of melee diamonds at low cost. The development ...

It has become harder and harder to assess the real value of a gemstone since the emergence of synthetic diamonds, treated diamonds and nearly perfect imitates. Infrared spectroscopy is an elegant way ...

Diamonds form deep within the Earth's mantle, around 250 kilometers below the surface, where immense pressure (up to 10 GPa) and temperatures (around 2,200 °C) compress carbon into diamonds over ...