Kyanite orange (single crystal) Tanzania, Nani Hill, Loliondo

The price is offered per gram with no choice.
With a choice, selection by weight, color and size, the price is250 rubles per gram.

20 mm-length of samples
30 - 3 mm - thickness.
Weight from 7 to 0,7 grams
The cost without choice will be from 2,1 rubles to 105 rubles per unit.

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Kyanite is quite difficult to process because of its ability to break easily.
The hardness of the stone varies dramatically in different directions. Hardness - 315 (scratched with a knife) in the direction of elongation of the plate 5,0 (not scratched with a knife) in the perpendicular direction.
This unique property distinguishes kyanite, among other precious stones.

In Tanzania, at the Loliondo mine, where the orange garnet spessartina(" Mandarin") is mined, a Deposit of bright orange, quite rare kyanite was discovered.
The color of the mineral is often uneven and depends on the impurities included in its composition..
Orange color in this case is due to impurities of manganese..

Kyanite is presented in the form of elongated, flattened and long-columned, plank-shaped crystals, the structure of which often resembles wood, for which in ancient times the Germans called it " plank stone». Crystal heads are absent or poorly developed.

All samples of kyanite-in the form of raw oblong single crystals of good color, in the creative process can become inserts for your jewelry (a lot of translucent crystals) or-take a place in your collection of any level.