BLACK RUTILATED QUARTZ STONE 13.90 CTS [MX4373 ]

Item Information

Dimensions (mm) not provided
Weight (carats) 14 carats
Colors
Certified Gemstone

BLACK RUTILATED QUARTZ

This is a natural stunning  gem stone displaying a heavy display of  black needles.

Weight 13.90 cts app

size 17 x 17 x 7 mm app

 

 

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.

19h 5m 34s

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Pricing & Details

Bid Increment $1.00
Starting Bid $10.00
Auction ID 144504
Watchers 3 watching
Viewed 511 times
Starts 5th Dec 2016 5:02pm PST
Ends 8th Dec 2016 5:00pm PST

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