Brookite included in Quartz (polished)

Diamantina, Jequitinhonha valley, Minas Gerais, Brazil
Miniature, 5.2 x 2.8 x 2.8 cm
Start Time: 11/12/2009 6:30:00 pm (CST)
End Time: 11/24/2009 7:01:08 pm (CST)
Auction Closed

Item Description

This specimen of quartz encloses a sharp brookite inclusion, a single elongated crystal with perpendicular "wings" of minute acicular brookite crystals flying off of it to the sides. You can see why the Brazilians call these "dragonflies" in quartz. Polished, to highlight the inclusion, this is a remarkably clear crystal core, and with one of the larger such inclusions I have seen. 61 grams

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