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Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats.
Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats. Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats. Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats. Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats.

Quartz with fluorescent Petroleum inclusions, faceted, Pakistan. 4.33 carats.

Product Code: QUEN164
Units in Stock: 1
£115.00
Cut from a double-terminated Quartz crystal from Belouchistan, Pakistan, this artfully faceted gem contains negative cavity inclusions which are filled with liquid petroleum, which appear a bright yellow colour in daylight.

Under magnification, bubbles of Methane gas are visible within the liquid petroleum, which move through the cavities when the stone is rotated.
The petroleum exhibits a strong greenish-blue fluorescence in UV light, as shown in image 1.
 
Faceted examples of this astonishing gem variety are not often encountered. The nature of the inclusions make faceting perilous, the crystals tending to shatter during the cutting process.


Images 4 (daylight) and 5 (longwave UV light) are magnified views of the inclusion scene.


weight:  4.33 carats
shape:   Mixed oval cut
dimensions:   12.24 x 9.05 x 6.46 mm
treatment:  None