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Identity HelpWhat are these thundereggs pls? (from Morocco)

13th Nov 2008 04:15 GMTShifter

I pretty sure the pink and gold one is fake - looks pretty cool though - how do they make that?

Second one look more genuine - just some kind of quartz?


Cheers for any help!

13th Nov 2008 06:11 GMTNH

The first one looks like it just has some paint applied - the color does not penetrate along cracks as would be expected it if had been dyed, and is only on the surface of the crystals, which would be very unlikely for natural amethyst. Perhaps try soaking it in some detergent and scrubbing it to remove the paint and obtain a more natural specimen?


The second and third seem to be natural. They contain stalactites with druzy quartz.

13th Nov 2008 11:37 GMTRock Currier Expert

Shifter,

The Moroccans are past masters at producing bogus specimens. I think it is a sort of part of their national pride to see who can dupe the foreign tourists the best and for the most money. Remember that Morocco has been a play ground for all kinds of dumb tourists for several hundred years and I suppose that I were subjected to that kind of continuous assault I would be doing what they do. The kind of "red" geode you show in your first picture looks like it had been "painted" or died. Just putting it in water or some solvent may instantly give it away as a fake. When I was there they often used colored inks that they would let dry out on the crystals and the result would give gaudy iridescent green crystals and other colors. The first time I saw the stuff was when I was driving across the Atlas mountains on my way to Bou Azzer. A guy who had an open air mineral stand/shack along side the road was flashing them at cars as they went past. I jammed on the brakes and backed up to see what it was he had. It looked weird and as soon as I got it wet with a little bit of spit, the ink started to run. I had a good laugh and drove on. Now I wish I had bought a piece of the outrageous stuff for memory sake.

13th Nov 2008 22:25 GMTRoger Lang Manager

Hi Shifter,

fullack to my pre-posters: the first one is dyed/painted. They mostly use a not water-soluble dye. I used to have one of those in the late 1970s (when i was really young ;-) ) and was very happy with it until i spilled some drops of acetone on it. If you treat this with an organic detergent you will most probably get a nice quartz geode with whitish crystals.


The second is natural and most probably from the Sidi Rahhal region http://www.mindat.org/gallery.php?loc=8351


Cheers

Roger

21st Aug 2016 19:56 BSTnaama levy

funny ! I also got one of those in the Sahara desert. They did sai it's colored, so they didn't lie about that. But what is it made of anyways ? did mother earth made it at all ?

21st Aug 2016 20:08 BSTErik Vercammen Expert

They are just ordinary quartz geodes, but with a gray, white or other unattractive color. The dye makes them fancier and more expensive.
 
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