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


gem photos
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
US Diamond Mines
US Diamond Mines: Did you know that diamonds can be found in the United States?
Gemstones of the World
Gemstones of the World - A book by Robert Schumann. Over one million copies sold.
World Globes
World Globes - A nice selection of globes for students, schools, homes and offices.
Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
rock tumblers
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Petrified Wood
Petrified Wood is a fossil that forms when dissolved material precipitates and replaces wood.
Red Beryl
Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah.


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
  Ruby and Sapphire
  100+ Gems
  Tourmaline
  Pictures of Opal
  Diamond
  Labradorite
  Ammolite
  Tanzanite



© 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.