Novembr 16-18—COLUMBIA, SOUTH CAROLINA: Annual show; The Columbia, SC Gem and Mineral Society; Fri. 10-6, Sat. 10-6, Sun. 12-5
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 Post subject: emeralds
PostPosted: Fri Feb 24, 2017 7:31 pm 
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Hello everyone, long time no write. My question: can green emeralds have small clear areas in them? Thanks, david.

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 Post subject: Re: emeralds
PostPosted: Fri Feb 24, 2017 9:12 pm 
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You mean colorless areas? Emeralds are often zones with stripea or concentric zones of colorless or lighter green.


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 Post subject: Re: emeralds
PostPosted: Fri Feb 24, 2017 10:57 pm 
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yes, what you wrote. thanks

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 Post subject: Re: emeralds
PostPosted: Tue Feb 28, 2017 12:07 am 
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https://www.gia.edu/gems-gemology/fall- ... ed-emerald


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 Post subject: Re: emeralds
PostPosted: Wed May 31, 2017 6:56 pm 
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Emeralds from Torrington, Australia are very often colour zoned from clear to green. They are beautiful. Emerald pictured isn't mine, just googled it.


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 Post subject: Re: emeralds
PostPosted: Thu Jun 01, 2017 12:35 am 
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Yes, they are really beautiful. Some look like a bar code in green and colorless.

Same in some "emeralds" from Nigeria.

"Emerald" course not sure whether they are chromian Aquas or Vanadium Beryl or really emerald.

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 Post subject: Re: emeralds
PostPosted: Thu Jun 01, 2017 1:52 am 
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Yes australian emeralds are known for these kind of "stripes".
I have some from Afghanistan and nice ones from Nigeria too.
This one is from Nigeria and looks really great...


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 Post subject: Re: emeralds
PostPosted: Thu Jun 01, 2017 5:58 pm 
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Which is the direction of the C-axis in relation to the stripes ? Parallel or perpendicular ?


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 Post subject: Re: emeralds
PostPosted: Thu Jun 01, 2017 6:16 pm 
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Stripes are perpendicular to the c-axis (salamiwise). You can of course get hexagonal zoning down the C as well.


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 Post subject: Re: emeralds
PostPosted: Fri Jun 02, 2017 12:00 pm 
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Marlow wrote:
Yes, they are really beautiful. Some look like a bar code in green and colorless.

Same in some "emeralds" from Nigeria.

"Emerald" course not sure whether they are chromian Aquas or Vanadium Beryl or really emerald.


Depends on how you define emerald.

This is the definition I've been using in a couple of gem journal articles...
Emerald is a gem variety of beryl whose green color arises primarily from trace impurities of chromium and/or vanadium. Emeralds may also contain trace amounts of iron; this chromophore may add a yellow or blue tint.

The Nigerian beryl I've tested contain plenty of Cr in their green regions, so I think it is fair to call them emeralds. Apparently, Dr. Hanni agrees.


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 Post subject: Re: emeralds
PostPosted: Fri Jun 02, 2017 5:42 pm 
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http://mokslozurnalai.lmaleidykla.lt/pu ... 96-100.pdf

Some of the nigerian material is neither emerald nor aquamarine.

Try to make some pics tomorrow.

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 Post subject: Re: emeralds
PostPosted: Sat Jun 03, 2017 8:11 pm 
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Good reading! Thanks for the article.


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 Post subject: Re: emeralds
PostPosted: Sat Jul 22, 2017 4:11 am 
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GemmyGirdl wrote:
Emeralds from Torrington, Australia are very often colour zoned from clear to green. They are beautiful. Emerald pictured isn't mine, just googled it.


That's a beautiful example.


Last edited by Hardins on Sat Mar 17, 2018 12:03 pm, edited 1 time in total.

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 Post subject: Re: emeralds
PostPosted: Thu Aug 24, 2017 4:13 am 
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Pls I want to mine out the emerald in a rock body roughly the size of a plot of land. It has been confirmed before to contain emerald and we have also seen beryl in the surrounding area.
Don't know if to blast it as dat may destroy the emeralds in case its close to the surface.
Or would dexpan work in this situation maybe safer. Or how can I can go about it to get the emerald safely out of this hard rock without damaging it


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 Post subject: Re: emeralds
PostPosted: Fri Aug 25, 2017 10:08 am 
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Not sure how to get at emeralds in hard rock, But, if I were you I would go back to the board index, scroll down until you find the miners corner.

The people there have a lot of experience in extracting gemstones and I'm sure somebody will be able to give you useful information.

Good luck

What country is the deposit in?


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