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 Post subject: Re: Heliodor Irradiation
PostPosted: Sun Jan 27, 2013 8:06 am 
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Here is my yellow beauty. Isn't it cute ! In one picture it lays on its table, in the other on its pavilion.
Well, I think I have decided I like it anyway, whether irradiated or not !

Image

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 Post subject: Re: Heliodor Irradiation
PostPosted: Tue Jan 29, 2013 3:28 am 
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upcyclist wrote:
Barbra Voltaire wrote:
I would not personally rely on "sight" determination.


Yes, Barbra would greatly prefer the Chelsea Filter ::ducks::



Hahahahahahaha classic, UPC..just classic.
I have a great picture of Vietnamese aquamarine right next to irradiated heliodore.....exact same vietnamese aqua just that it had been zapped and was yellow...the picture is on my other computer

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 Post subject: Re: Heliodor Irradiation
PostPosted: Tue Jan 29, 2013 1:33 pm 
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From JCK Jewel of the Month: YELLOW BERYL
Gary Roskin, G.G., FGA, Senior Editor wrote:
Many of the bright yellow or slightly brownish "golden" beryls have been irradiated. Just a short burst of gamma or electron beam irradiation is enough to color goshenite. According to Tom Schneider, irradiation expert and colored gem importer in San Diego, the accidental discovery of irradiated beryl came while irradiating colorless topaz. As the topaz was slowly turning blue, the goshenite—which had been accidentally mixed in with the topaz—was quickly turning bright yellow.

Different mines yield different material, notes Schneider—even though it may all look like the same goshenite, it can contain different trace elements that react uniquely to the irradiation process. Some irradiated beryls become a bright lemony yellow, while others become a more golden color. According to Schneider, golden beryl is much more salable and attractive.

On rare occasion, irradiation produces pink morganite. While irradiation-processed color is stable, Schneider does try to "bleach" the stones in the San Diego sun to test for fading.


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 Post subject: Re: Heliodor Irradiation
PostPosted: Wed Jan 30, 2013 6:09 am 
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As for the color stability, I intend to wear this stone as a pendant, outdoors, next summer, so I'll be able to notice if the color fades or not, and will keep you informed !


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 Post subject: Re: Heliodor Irradiation
PostPosted: Wed Feb 06, 2013 3:29 pm 
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and here it is...uncanny wouldn't you say #-o
Image

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 Post subject: Re: Heliodor Irradiation
PostPosted: Tue Feb 12, 2013 7:21 pm 
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By the way, I have a crystal out in a sunny spot. After two and a half sunny days (plus a cloudy one), it has not faded at all, but I'll leave it there for a week or so.

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 Post subject: Re: Heliodor Irradiation
PostPosted: Sun Feb 17, 2013 12:38 pm 
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OK, I left the stone out for about a week. Most of the days were sunny, though there were one or two cloudy days. Regardless, the stone has not noticeably faded.
As a side-note, while looking at the rest of the stones in the parcel I noticed one of them, when looked at down the length, has an orange core with a yellow rind. Not necessarily relevant to anything, but kind of neat. None of the others showed noticeable zoning like that.

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 Post subject: Re: Heliodor Irradiation
PostPosted: Mon Feb 18, 2013 7:31 am 
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Scarodactyl was it, on the picture of your stones, the top one on the left side ?


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 Post subject: Re: Heliodor Irradiation
PostPosted: Mon Feb 18, 2013 1:48 pm 
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I don't actually own that particular lot (though it's from the same seller). It does look rather similar to the one pictured, though.

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 Post subject: Re: Heliodor Irradiation
PostPosted: Mon Apr 27, 2015 5:07 pm 
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Hi there, I'd like to buy these 2 heliodors from ebay, but I'm not sure about the irradiation, could u help me???

they said they're from Vietnam 100%natural Terminated Yellow Beryl. Treatment : None

I think they're too clean and too good for that price

http://www.ebay.com/itm/13-5ct-Vietnam- ... 0787&rt=nc

http://www.ebay.com/itm/16-9ct-Vietnam- ... 1581959551

because its from same guy...

http://www.ebay.com/itm/14ct-100-natura ... 1581959551

THANKS A LOT


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 Post subject: Re: Heliodor Irradiation
PostPosted: Mon Apr 27, 2015 8:13 pm 
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Bear in mind that 29mm is 1.1inch.
and 41mm is 1.6inch
The photo makes them look like a cabinet specimens.


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 Post subject: Re: Heliodor Irradiation
PostPosted: Mon Apr 27, 2015 8:22 pm 
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I like this seller's stock, but all information points to them being irradiated. There does not appear to be any known source of natural yellow beryl in Vietnam, but there are ample reports of stones being irradiated to produce the color.
Tuan always has nice-looking stuff at reasonable prices. Generally not cheap enough for me to bite, but usually close.

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 Post subject: Re: Heliodor Irradiation
PostPosted: Tue Apr 28, 2015 4:49 am 
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thx guys... anyway do anybody know any good seller with real heliodors with origin color?

I'd like to buy some nice crystal for my collection between $ 100-300, any good source?


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 Post subject: Re: Heliodor Irradiation
PostPosted: Tue Apr 28, 2015 4:00 pm 
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IS THIS WHAT HE SENT ME... WOULD YOU TRUST HIM?

All my yellow beryls are 100% natural,no heat or treatment any way.
I've bought them from Miners that working at natural mines at the Border of Vietnam,Laos,Cambodia
I've not any proof for them to show you,but i've checked by gems Lab in Hanoi Vietnam and Gems Lab in Chia
All 're no heated.
Thank you

- tuan72


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 Post subject: Re: Heliodor Irradiation
PostPosted: Wed Apr 29, 2015 5:35 am 
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Since the irradiation treatment cannot be detected even by a lab, it is easy for him to say so.


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