Quartz cabochon with Goethite phantom, aka Volcano Quartz, Brazil. 19.34 carats.

Product code: QUCG35
£26.00

Product information

A combination of smoky, Citrine and colourless Quartz cabochon from Minas Gerais, Brazil with a phantom growth of Goethite.

The distinctive angular pattern of the phantom, which appears as feather-like fronds of black Goethite within the gem, give rise to it's alternate name, 'Volcano Quartz'.

Images 3 and 4 were taken under magnification, while image 5 shows the gem in transmitted light.

An uncommon and very collectable gemstone.


weight:  19.34 carats
shape:   Double-sided drop shape cabochon
dimensions:   32.75 x 14.80 x 4.41 mm
treatment:  None

Technical specifications

Product Code QUCG35
Weight 0.02kg

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