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allochroite
A garnet that is dark-colored due to its iron-lime composition.
alpaca ...
Allochroite: A dark colored common garnet composed of iron lime.
Alloy: A compound comprised of two or more metals to increase the hardness and/or luster of the resulting product.
d'Andrada who named the gem 'allochroite' in 1800, the Andradite garnets varies in many colors from black to shades of yellow and green. The lively green and rare demantoid garnet is the most valuable of all the garnets.
Some Other Varieties are Andradite, Essonite, Tsavorite, Spessartite, Melanite, Allochroite, Ouvarovite and Demantoid. This stone has a long history of use as a medicine stone and was used for healing blood and lung diseases.
Iolite ...
These precious gemstones were name after the seeds of a pomegranate. Some variations of garnets include Allochroite, Almadine, Andradite, Demantoid, Essonite, Grossularite, Melanite, Ouvarovite, Pyrope, Rodalite, Spessartite, and Tsavorite.
Named varieties of Garnet include Andradite, Tsavorite, Grossularite, Essonite, Pyrope, Almandine, Spessartite, Melanite, Allochroite, Ouvarovite, Demantoid, and Rhodolite.
Gaspetite ...
Garnet Stones are available in varieties named Grossularite, Pyrope, Almandine, Rhodalite, Andradite, Essonite, Tsavorite, Spessartite, Melanite, Allochroite, Ouvarovite and Demantoid.
 See also: Color, Jewelry, Gemstone, Grossular, Garnet
  
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