Definitely one of the finer specimens of the unusual and striking Blue Quartz from the famous locality in Spain. These modified crystals have good crystal development for the variety. Here, the best-developed crystal (.4 cm on edge) has a modified termination that almost looks dipyramidal, and the luster is superb. The blue color is caused by fibrous inclusions of Magnesioriebeckite.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
You are free:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page.
The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by a Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2010022810018255.