Dimensions (mm) | not provided |
Weight (carats) | 16 carats |
Colors | |
Certified Gemstone |
BLACK RUTILATED QUARTZ
This is a natural stunning gem stone displaying a heavy display of black needles.
Weight 16.30 cts app
size 21 x 15 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.
Great vendor, stones as pictured, good delivery time!
Great vendor, stones as pictured, good delivery time!
Great vendor, stones as pictured, good delivery time! Look forward to future purchases from this vendor!
Great vendor, stones as pictured, good delivery time!
The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.
Request AuditAuction ID | 144503 |
Watchers | 5 watching |
Viewed | 1,048 times |
Starts | 3rd Nov 2009 5:05pm PST |
Provider | Shipping | Transit |
---|---|---|
FedEx | $29.00 | 5 Days |
Registered Shipping | $15.00 | 14 Days |
Standard Shipping - Untracked | $5.00 | 28 Days |
Shipping Insurance all providers $7.00 (optional) |