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Identifying Doubling
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Author:  bretb [ Sun Feb 24, 2019 9:01 pm ]
Post subject:  Identifying Doubling

So I'm having trouble figuring out how to recognize doubling when looking through magnification.

I've obtained picture that shows doubling, but can someone point out exactly where the doubling occurs in the in the image?

It looks like a triangular facet, but I'm not sure exactly what I'm looking for in the image to identify the doubling.

[img]
Attachment:
Dobling%20Example.PNG
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Attachments:
Dobling Example.PNG
Dobling Example.PNG [ 300.06 KiB | Viewed 408 times ]

Author:  1bwana1 [ Sun Feb 24, 2019 10:45 pm ]
Post subject:  Re: Identifying Doubling

All of the facet junctions are doubled in this image. Look for parallel lines close together, and dark/lite areas with the same shape looking like they overlap. Find a similar picture of a CZ or Diamond and I think the difference will become clear.

Author:  Barbra Voltaire, FGG [ Sun Feb 24, 2019 11:17 pm ]
Post subject:  Re: Identifying Doubling

Hi bretb.
Your picture isn't clear.
Look at this one: a bit better....especially the double culet.
Image

Try identifying doubling of facets with easier material.
Peridot lily pads:
Image

Zircon:
Image

Author:  bretb [ Tue Feb 26, 2019 8:00 pm ]
Post subject:  Re: Identifying Doubling

Ok, I think I have a better idea at what I'm looking at.

Author:  Barbra Voltaire, FGG [ Tue Feb 26, 2019 8:08 pm ]
Post subject:  Re: Identifying Doubling

Were you ever able to see the doubling in the moissanite?

Author:  Gabroo [ Wed Feb 27, 2019 1:37 am ]
Post subject:  Re: Identifying Doubling

Yes first photo, Moissanite has double faceting, but mostly visible in the center.

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