Taaffeite holds the title of the rarest crystal on Earth. This remarkable gem was discovered by gemologist Richard Taaffe ... allowing light to dance within the stone. With a Mohs hardness rating of 8 ...

Some rare contact sheet images of The Rolling Stones when appearing on Top Of The Pops.

A team of archaeologists has discovered a rare rock used to make tools in the Stone Age. The "polishing boulder", found in the Valley of the Stones near Dorchester, would have been used to make ...