Each vein has its own characteristic colour and banding of blue, purple, yellow and white, with there being currently 14 known different veins. Blue John Stone expert and retired Senior Geology ...

A "lost" vein of rare Blue John stone has been rediscovered in a Peak District cavern after a 68-year search. In 1945, miner John Royse reported finding an "amazing deposit" in Treak Cliff Cavern, ...

This sky-blue stone is a rockhound's dream, and you won't find it anywhere except one spot in Michigan. Skip to Article. Set weather. Back To Main Menu Close. Quick Look- ...

Turquoise has been mined for at least 70 years in central Nevada -- so much that the state once was considered the nation's capital for production of the typically pale blue stone.

A "lost" vein of rare Blue John stone has been rediscovered in a Peak District cavern after a 68-year search. In 1945, miner John Royse reported finding an "amazing deposit" in Treak Cliff Cavern ...