Each month has at least one representative gemstone. Here's what you need to know about December's birthstones.

A Tanzanian small-scale miner, who became an overnight millionaire in June for selling two rough Tanzanite stones valued at $3.4m (£2.6m), has sold another gem for $2m. The third discovery by ...

The name of the new mineral was chosen by Jaszczak and his colleagues after the township of Mererani, known more commonly in the mineral and gemological communities as "Merelani," in honor of the ...

Of the three, tanzanite is relatively new to the world of gems. According to the Geological Institute of America, the stone was first identified in 1967 in Tanzania − hence Tanzanite's name.