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cleaning topaz

Posted by Cesco Ramakers  
Cesco Ramakers May 10, 2012 04:03PM
Hello everybody,

What is the best way of cleaning topaz from the Thomas Range Utah.
Especially the small layer of matrix surrounding the cristals.

cesco ramakers
Rock Currier May 11, 2012 08:48AM
Send us a picture.

Rock Currier
Crystals not pistols.
Cesco Ramakers May 11, 2012 11:07AM

Here's a picture of some of the topaz specimens I have.
The largest crystal is about 3.3 cm.
open | download - topaas.jpg (311.5 KB)
Spencer Ivan Mather May 11, 2012 12:48PM
Personally I'd leave them as you found them, I don't believe in cleaning off what is how they were found !
James Christopher May 11, 2012 01:32PM
They are most likely grown into the crystal, so "cleaning" them is not going to give you a smooth crystal face
Dana Slaughter May 11, 2012 01:41PM
Some use air abrasion tools to remove the rhyolite on the outside of the crystals but there is nothing one can do about the included rhyolite that is so common in these specimens. Not having an air abrasion tool, I mechanically removed the surface rhyolite (seems to be somewhat siliceous) with a range of dental picks under the microscope.
Cesco Ramakers May 11, 2012 02:29PM
Thanks everybody,

I shall give it try with the dentalpicks to remove some matrix.
Jim Bean May 12, 2012 04:40AM
That matrix penetrates well into the crystals you have shown, and in a perfect world where there was some magic chemical potion to remove the rhyolite matrix you would find them ending up very pitted anyway.
Enjoy them the way they are!
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