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 Post subject: Synthetic opal
PostPosted: Thu Jan 09, 2014 4:57 pm 
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Synthetic opal

dimensions: 22 x 28 x 17 mm

weight: 4.72 gm

Particle size: 250nm


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synthetic_opal_schoepe.jpg
synthetic_opal_schoepe.jpg [ 66.89 KiB | Viewed 1592 times ]

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 Post subject: Re: Synthetic opal
PostPosted: Thu Jan 09, 2014 5:41 pm 
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Huh. That's pretty neat. Thanks for posting the picture.

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 Post subject: Re: Synthetic opal
PostPosted: Fri Jan 10, 2014 2:37 am 
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It's a prototype, prepared within two weeks by homogeneous crystallization.

It is planned to repeat the preparation with bigger particles to shift the play-of-color to the orange-red region and a lower particle concentration to increase the crystallite size.


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 Post subject: Re: Synthetic opal
PostPosted: Fri Jan 10, 2014 3:29 am 
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I just heard a collective cry of despair from Aussi Opal miners!!


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 Post subject: Re: Synthetic opal
PostPosted: Sat Jan 11, 2014 10:30 am 
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bigger version of the picture

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 Post subject: Re: Synthetic opal
PostPosted: Tue Jul 08, 2014 11:34 am 
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Just started a new experiment, except bigger particles for a red play-of-color all other parameters are still the same.

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