McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » Gemstones » Opal » Black Opal

Black Opal: Also Known as Dark Opal


Pictures and video of black opals



What is Black Opal?



"Black opal" is a term used for opal that has a dark body color, often black or dark gray. The term is also used for opal that has a dark blue or dark green body color.

The dark body color often makes the fire of black opal more obvious. This contrast of fire color to body color makes black opals very desirable and sold for high prices.

One of the specimens at right is a solid black opal with a strong blue face-up color play. It was mined at Lightning Ridge, Australia, the "Black Opal Capital of the World". It is 2.46 carats in weight and 9.5 x 12.5 millimeters in size.

The other specimen is a black matrix opal cut from material mined at Andamooka, South Australia. It is a cabochon of about 30 carats.








Find it on Geology.com




More from Geology.com


Plate Tectoncs
Zoom in on Plate Boundaries: See the details of plate tectonics in satellite view.
Types of Volcanic Eruptions
Types of Volcanic Eruptions: A description of the most common eruption types.
diatomite
Making Beer With Rocks - Do you know which fossiliferous rock is used to make beer?
uses of gold
The Many Uses of Gold: Unique properties make gold one of the most useful metals.
Fossils
Fossils: Learn about fossils and fossil discoveries around the world.
Organic Gems
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
Meteorites
Meteorites - Rocks that were once parts of planets or large asteroids.
Mount Cleveland
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.


Black Opal
A solid black opal cabochone with a strong blue face-up color play. It was mined at Lightning Ridge, Australia, the "Black Opal Capital of the World". It is 2.46 carats in weight and 9.5 x 12.5 millimeters in size.




Andamooka black matrix opal
A black matrix opal cut from material mined at Andamooka, South Australia. It is a cabochon of about 30 carats.


More Gemstones
  100+ Gems
  Emerald
  Pictures of Opal
  Chatoyant Gems
  Labradorite
  Extraterrestrial Gems
  United States Gemstones
  Turquoise

© 2005-2014 Geology.com. All Rights Reserved.
Images, code and content of this website are property of Geology.com. Use without permission is prohibited. Pages on this site are protected by Copyscape.