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M700 Smoky Quartz Crystal

M700 Smoky Quartz Crystal

$100.00

Here is a very nice, above average quality Smoky Quartz Crystal specimen from Brazil.  It measures 3 3/8″ x 1 1/8″ x 3 1/8″ and has a great polish. It has exceptional clarity, Amphibole base, dazzling “rainbow” reflections and wonderful inclusions. This crystal  is an amazing work of nature.

In stock

Description

Quartz is the second most common mineral in the Earth’s continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

Amphiboles are minerals of either igneous or metamorphic origin; in the former case occurring as constituents (hornblende) of igneous rocks, such as granite, diorite, andesite and others. Calcium is sometimes a constituent of naturally occurring amphiboles. Those of metamorphic origin include examples such as those developed in limestones by contact metamorphism (tremolite) and those formed by alteration and other ferromagnesian minerals (hornblende).

Additional information

Weight .75 lbs
Dimensions 4.75 × 4.875 × 2 in

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