Labradorite Jewelry
Where the name comes from: The Labrador Peninsula in Canada where it was first found in 1770.Where the stones come from: Labrador, Canada
Chemistry: A form of feldspar (Ca,Na)(Al,Si)4O8
Colors: Blue, grey, black, white or colorless though frequently with a rich internal play of colors.
...and another thing: The play of spectral colors within the mineral is known as Labradorescence.