is a blue variety of Tourmaline, that
is usually, but not always, the Elbaite
variety of Tourmaline.
A true Indicolite color is a light to dark, saturated blue. Of course a true Indicolite will be a pure blue, but
the name has come to be used for just about any shade
of blue ranging from grayish blue to violet-blue.
was named in 1800 by Brazilian mineralogist José Bonifácio de Andrada e Silva (1763-1838).
name Indicolite is from the original indigolite, which
from the early 18th century French word indigo,
meaning deep blue color,
and the Greek word λίθος, (lithos) meaning stone.
French word indigo referred
to a blue dye obtained from a
of the genus Indigofera.
is a large genus of over 750 species of flowering plants belonging to the family Fabaceae,
commonly known as the legume, pea or bean family,
is found in Afghanistan, Brazil, Madagascar, Mozambique,
Namibia, Nigeria, Pakistan, Sri Lanka and the United
States (California and Maine). Indicolite distribution: in Afghanistan at Paprok, Kamdesh District, Nuristan Province.
At several localities in Minas Gerais, Brazil: at the
Cruzeiro mine, São José da Safira and
Santa Rosa mines, Doce valley and at Barra de Salinas district, Barra do Salinas, Coronel Murta, Jequitinhonha Valley.
In Madagascar at the Anjahamiary pegmatite, Tranomaro Commune, Amboasary District, Anosy Region, Tuléar Province.
In Namibia at the Otjua Mine, Otjua Farm 37, and at
Karibib District, Erongo Region. In Pakistan at Stak Nala, Haramosh Mts., Skardu District, Baltistan, Gilgit-Baltistan.
In the USA at several mines in the Warner Springs District, San Diego County, California;
and several mines in the Mesa Grande District, Aguanga
Mountain District and the Pala Districts of San Diego
County, California; in Maine at Crooker Gem Pegmatite
Quarries, Newry, Oxford County and at the Oak Hill Road
Cuts, Standish, Cumberland County; in New Hampshire
at the Chickering Mine, Walpose, Cheshire County.