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Iris (in agate)

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Fossilman
Cave Dweller

Member since January 2009
Posts: 20,718

Iris (in agate) Mar 26, 2017 22:18:59 GMT -5 rockjunquie, 1dave, and 1 more like this

Quote

Post by Fossilman on Mar 26, 2017 22:18:59 GMT -5

Some people were wondering what is "Iris" and why its so popular among agate cutters,especially Montana moss agates..
I have seen it in Brazilian and Carnelian too.......

geology.com/stories/13/iris-agate/

Last Edit: Aug 2, 2017 10:33:10 GMT -5 by Tommy

God,family and life.....

Fossilman Cave Dweller Member since January 2009 Posts: 20,718	Iris (in agate) Mar 26, 2017 23:05:03 GMT -5 drocknut and 1dave like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Fossilman on Mar 26, 2017 23:05:03 GMT -5 Here is one I just cut... www.flickr.com/photos/113624614@N07/33289581500/in/dateposted-public/
	Last Edit: Mar 26, 2017 23:05:34 GMT -5 by Fossilman God,family and life.....

aDave
Global Moderator

Member since February 2017
Posts: 5,677

Iris (in agate) Mar 26, 2017 23:12:39 GMT -5 1dave likes this

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Post by aDave on Mar 26, 2017 23:12:39 GMT -5

Mar 26, 2017 22:18:59 GMT -5 Fossilman said:

Thanks for the info. Very informative. I learned something today.

Regards.

Dave

1dave
misunderstood rock expert

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Member since October 2013
Posts: 11,934

Iris (in agate) Mar 27, 2017 8:09:20 GMT -5 drocknut likes this

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Post by 1dave on Mar 27, 2017 8:09:20 GMT -5

Some won't follow urls so,

Figure 1: Two views of a specimen of iris agate.
The photo on the left was taken in normal light and displays the color of light reflected from the agate.
The photo on the right shows the agate with backlighting.
The backlighting reveals the diffraction grating or "iris" effect produced when light passes through the very fine banding of the agate.
This specimen is a thin slice of Brazilian agate that measures about 25 mm high, 14 mm wide and 3 mm in thickness.

Now they have to go there to get "the rest of the story."

I'm a ROCKOLOGIST !

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Fossilman Cave Dweller Member since January 2009 Posts: 20,718	Iris (in agate) Mar 27, 2017 9:35:06 GMT -5 1dave likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Fossilman on Mar 27, 2017 9:35:06 GMT -5 This one was my last cut..... www.flickr.com/photos/113624614@N07/33289581500/in/album-72157681421832526/
	Last Edit: Mar 27, 2017 9:35:42 GMT -5 by Fossilman God,family and life.....

drocknut no longer being taken for granite I'd rather be rockhounding Member since December 2008 Posts: 8,179	Iris (in agate) Mar 27, 2017 10:04:39 GMT -5 Fossilman and 1dave like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by drocknut on Mar 27, 2017 10:04:39 GMT -5 Very cool and thanks for the information.
	Diane My shop on GoImagine: www.goimagine.com/Artisan-rockhound My Etsy shop: ArtisanRockhound.etsy.com Follow me on instagram: @artisanrockhound My blog: rockhoundramblings.blogspot.com/

Fossilman Cave Dweller Member since January 2009 Posts: 20,718	Iris (in agate) Mar 27, 2017 16:04:28 GMT -5 1dave likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Fossilman on Mar 27, 2017 16:04:28 GMT -5 I have six more bigger slabs with "Iris" also,but need to get polish on them,for it to show...
	God,family and life.....

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Iris (in agate)

Post by Fossilman on Mar 26, 2017 22:18:59 GMT -5

Post by Fossilman on Mar 26, 2017 23:05:03 GMT -5

Post by aDave on Mar 26, 2017 23:12:39 GMT -5

Post by 1dave on Mar 27, 2017 8:09:20 GMT -5

Post by Fossilman on Mar 27, 2017 9:35:06 GMT -5

Post by drocknut on Mar 27, 2017 10:04:39 GMT -5

Post by Fossilman on Mar 27, 2017 16:04:28 GMT -5

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