Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including ...

The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

A new report from coloured gemstones miner Gemfields on the emerald, ruby and sapphire markets “… serves as a reminder of how ...

Scientists introduced atomic defects in spinel using cerium, and voilà! The gemstone became a solid qubit system.

The gemstone spinel, known for its vibrant colors resembling gems like rubies and sapphires, has now been shown to be capable ...