Large, 6.1" Terminated Black Tourmaline (Schorl) Crystal - Pakistan

Large, Terminated Black Tourmaline (Schorl) Crystal - Pakistan #207205

This is an incredible, 6.1" long black tourmaline (schorl) crystal from Skardu area of Pakistan. The crystal has exceptional luster, a natural termination, and striations that run along the length of the crystal. There is an additional, partial schorl crystal and albite aggregations at the base of the largest schorl.

It comes with an acrylic display stand.

Schorl, also known as "black tourmaline" or "black schorl", is a black form of tourmaline that often occurs as lustrous prismatic crystals. The crystals can be stubby or elongated and typically feature lengthwise striations. Many schorl crystals have flattened pyramidal terminations. They can also form in radiating, columnar, and stalactitic aggregations, as well as small, needle-like inclusions within quartz (tourmalinated quartz) and in massive form.

Schorl is a basic sodium iron aluminum boro-silicate with the generic chemical formula NaFe2 + 3Al6(BO3)3Si6O18(OH)4 . It has been used for everything from jewelry to piezoelectric guitar pickups.

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