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 Post subject: Synthetic apatite
PostPosted: Mon Jul 11, 2011 1:15 pm 
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Hi,
Someone know where I can find and buy synthetic apatites ?
Thanks.


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 2:25 pm 
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Man made apatite?

In your mouth... :mrgreen:

Kidding aside... I never heard of apatite being made synthetically... can't help you, sorry...


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 3:00 pm 
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:D yes a friend say it exist ?? Also a publication in G&G 2001 ???
I search for her ..... me never look anything.


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 3:05 pm 
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Sorry : G&G winter 1992, p. 277


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 4:47 pm 
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Does that article describe gem quality synthetic apatite in any feasible sizes?


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 5:04 pm 
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G&G, Winter 2010
SYNTHETIC GEM MATERIALS
IN THE 2000S:
A DECADE IN REVIEW
describes:
Quote:
A synthetic apatite with a color change
from purple pink in incandescent light to violetish
blue in fluorescent light was reported by McClure
(2001). While most of the gemological properties
were consistent with natural apatite, suspicion arose
from an unusual spectrum (seen with a desk-model
spectroscope) that was different from natural material.
EDXRF analysis showed that the synthetic apatite contained a significant amount of neodymium and a small amount of strontium.
Magnification revealed chevron-type growth and elongated gas bubbles,
features that strongly supported a synthetic origin.
While synthetic apatite is an
oddity in the gem world, it has previously been
reported for laser applications (Koivula et al., 1992).


Since this was the only stone reported by the GIA in the decade, I don't think it is commercially available.
Secondly the additives neodymium and strontium would technically classify it as an artificial product.


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 Post subject: Re: Synthetic apatite
PostPosted: Mon Jul 11, 2011 5:14 pm 
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Dang... I have that issue and can even remember reading that article... A cold day, -10°C degrees, 40cm of snow and me defrosting in the tub with a G&G... hehehe... Good times... It didn't stick though :smt025


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 Post subject: Re: Synthetic apatite
PostPosted: Tue Jul 12, 2011 3:00 am 
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http://www.gems-plus.com/gemmes/s3c2pf-artificiel.php


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 Post subject: Re: Synthetic apatite
PostPosted: Tue Jul 12, 2011 10:19 am 
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I guess you found a source for this artificial product. :D
Please buy one and give us a report.


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 Post subject: Re: Synthetic apatite
PostPosted: Tue Jul 12, 2011 10:42 am 
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Location: Lyon - France
Here is what I found concerning this artificial gemstone, very close to synthetic apatite except for color and SG:
- Color: light blue under sunlight and light pink under incandescent light
- RI: 1.628-1.632
- Bir. (DR): 0.004
- Hardness: ≈5
- SG: 3.82
- LWUV: inert
- SWUV: moderate white
The chemical formula of this artificial gemstone is Sr3Ca2(PO4)3F:Nd3+
The color change effect is caused by 1% Nd.
Image

Have a good day,

Thierry


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 Post subject: Re: Synthetic apatite
PostPosted: Tue Jul 12, 2011 11:01 am 
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What is this material selling for?
Sorry my French is worse than bad.
:oops:


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 Post subject: Re: Synthetic apatite
PostPosted: Tue Jul 12, 2011 11:30 am 
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Location: Lyon - France
EUR 15.-/ct - around $21.-/ct
These synthetic/artificial gems are quite difficult to get because they are primarily manufactured for laser applications. I was lucky to know someone who knew someone who knew someone (...) who works in one of these french laboratories that manufacture these crystals (Czochralski process). I had many other exotic synthetic/artifical gemstones like this in the past (CaF2, YSO, Litanite, Linobate, LMA, LNA, YIG...). It's more and more difficult to get nowadays. :-(


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 Post subject: Re: Synthetic apatite
PostPosted: Thu Jul 14, 2011 12:44 am 
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Barbra Voltaire wrote:
What is this material selling for?
Sorry my French is worse than bad.
:oops:

http://translate.google.com/translate?j ... ficiel.php

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