80.00 CTS 'STAR BURST' RUTILATED QUARTZ ROUGH [FLA185]

Item Information

Dimensions (mm) 34 x 31 x 18mm
Weight (carats) 80 carats

QUALITY ROUGH

RUTILATED QUARTZ ‘STAR BURST’

This   is a natural stunning  rough specimen displaying gold needles.This is a interesting stone in that the needles radiate from   one spot so its called a star burst-usually from a mica centre-great collectors stone.You have to   process kilos of this material just to find the star.

Mined in Brazil

Weight 80.00 cts app

Size 34 x 31 x 18 mm app


We have taken the picture with the stone wet.We have also used a yellow light to try and show the “star burst’


 

 

Quartz   is the most common mineral on Earth. It is found in nearly every   geological environment and is a component of almost every rock type.  It   makes up about 12% of the earth’s crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks. It is also the most varied in terms of variety and color.  Quartz is a 7 on the Mohs scale of hardness.

Rutilated quartz is found in Australia, Brazil, Kazakhstan, Madagascar, Norway, Pakistan and the United States.

Rutile   is a major ore of titanium, which is a metal used for high tech alloys.  It often forms needle-like crystal inclusions inside quartz.   This form of quartz is known as rutilated quartz and it looks like small bars of imbedded needles.  Rutile is a 6 on the Mohs scale.

Because   of the difference in hardness between the two materials and because of   the way rutile forms inside, this can be a difficult stone to attain a   smooth surface without pits.

$24.99 USD

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Pricing & Details

Auction ID 703890
Watchers 3 watching
Viewed 370 times
Starts 17th Oct 2017 9:08pm PDT

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