'Citrine' Quartz Crystals on Matrix VAR 069

Citrine quartz crystals on matrix (heat-treated amethyst)

Measurements:  55 x 46 x 30 mm

Description:  A group of citrine-coloured quartz crystal on a thin matrix.

The crystals were originally amethyst, but the specimen was then baked at a high temperature (roughly 400 degrees C) for about half a day, which turned the colour to citrine.  

Some of the termination points have minute to small nicks, otherwise damage to the edges of the specimen. It displays well on a flat surface. 

Weight of Specimen:  90.3 g

Chemical Composition:  SiO2

Hardness on Mohs Scale:  

Location:  Minas Gerais, Brazil.

Specimen Code:  VAR 069

US $ 80

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