Home » Gemstones » Opal » Pinfire Opal

Pinfire Opal also known as Pinpoint Opal

Pictures of beautiful pinfire opals



What is a Pinfire Opal?



"Pinfire opal" is a name used for opal that has pinpoints of fire throughout the stone. The opal on the left is a pinfire opal cut from material mined at Coober Pedy, Australia. The stone on the right is a pinfire opal from the Constellation Mine in Spencer, Idaho. It is 6 millimeters by 4 millimeters in size. The video below illustrates the "play of color" in a pinfire opal.







Find it on Geology.com




More from Geology.com


Meteorites
Meteorites - Rocks that were once parts of planets or large asteroids.
Organic Gems
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
Deepest Point in the Ocean
Deepest Point in the Ocean: The deepest point in the ocean is in the Mariana Trench.
Quartzite
Quartzite: a nonfoliated metamorphic rock composed almost entirely of quartz.
Mars Meteorites
Mars Meteorites: Interesting iron meteorites found on Mars by NASA rovers.
Largest Oil Spills Map
Largest Oil Spills Map - Eleven oil spills from war, tanker wrecks and out-of-control wells.
Turquoise
Turquoise - A blue to blue-green gem material that has been used for over 6000 years.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.


blue common opal from Peru
The opal on the left is a pinfire opal cut from material mined at Coober Pedy, Australia. The stone on the right is a pinfire opal from the Constellation Mine in Spencer, Idaho. It is 6 millimeters by 4 millimeters in size.




More Gemstones
  100+ Gems
  Geology of Gems
  Extraterrestrial Gems
  Blue Gemstones
  Ruby and Sapphire
  Diamond
  Pictures of Opal
  Green Gemstones

© 2005-2016 Geology.com. All Rights Reserved.
Images, code, and content on this website are property of Geology.com and are protected by copyright law.
Geology.com does not grant permission for any use, republication, or redistribution.
Images, code and content owned by others are marked on the pages where they appear.