Sodalite ( galtovka ) Northeast Brazil, Bahia State

Price per gram without choice.

With a selection-selection by size, weight, color and other parameters price15 rubles per gram.

28mm-length
Weight from 40 grams to 12 grams.

The cost without a choice will range from 42 rubles to 144 rubles per unit.

With a choice - from 504 rubles to 180 rubles per unit.

Sodalite is a feldspathoid, its name indicates a high sodium content.
Its violet-blue, violet-blue color is streaked with white feldspar.
Good polishing, excellent rich color.
In the total mass there are minor cavities on some samples.

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Sodalite is often confused with lapis lazuli.
The blue color of the mineral is almost the same shade as that of a number of varieties of lapis lazuli, with white calcite veins (in most cases), very similar to those that occur in lapis lazuli, but in sodalite there are never Golden pyrite inclusions that make Badakhshan lapis lazuli "starry night" so elegant". But the sodalite is distinguished by a characteristic vitreous luster.
In chemical terms, sodalite is a chlorine-containing sodium aluminosilicate, and its name comes from the Greek name of sodium - " soda" .