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Inclusions in Red Stone
https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=6&t=18529
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Author:  Zorro [ Sat Jul 27, 2013 5:09 pm ]
Post subject:  Inclusions in Red Stone

This stone has RI 1.705 and SG 4.09. I think it is a Garnet. In photo "inclusions 2" we can see enlarged inclusions and in photo "inclusions 3" there is one triangular (in the white cycle). Can it be triangular platinum crystals of Pulled synthetics ? In photo "inclusions 4" we can see curve striae. Are there synthetic Garnets or the stone is not a Garnet ?

Thanks

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Inclusions 2.jpg
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Inclusions 3.jpg
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Inclusions 4.jpg
Inclusions 4.jpg [ 35.59 KiB | Viewed 1010 times ]

Author:  Julie Gowans-Poli [ Sat Jul 27, 2013 6:51 pm ]
Post subject:  Re: Inclusions in Red Stone

That last picture is polishing marks on the surface, not curved straie inside.

Author:  Alberto [ Sun Jul 28, 2013 4:41 am ]
Post subject:  Re: Inclusions in Red Stone

the 1st and 2nd pictures shows something looking natural to me.
3rd, as Julie said, are surface scratches/lines likely due to bad polishing...........

ciao
alberto

Author:  Isi [ Sun Jul 28, 2013 7:25 am ]
Post subject:  Re: Inclusions in Red Stone

With a RI at 1.705 it is very unlikely that the stone be a garnet. Or did you mean 1.750 ?

Author:  Zorro [ Sun Jul 28, 2013 5:18 pm ]
Post subject:  Re: Inclusions in Red Stone

"That last picture is polishing marks on the surface, not curved straie inside."


Julie , thanks for your information because I have many stones with this marks and i though it was curved straie.

Author:  Zorro [ Sun Jul 28, 2013 5:27 pm ]
Post subject:  Re: Inclusions in Red Stone

"With a RI at 1.705 it is very unlikely that the stone be a garnet. Or did you mean 1.750 ?"

Isi, hi
I am not gemologist. I studied agriculturalist. It is 1.705 and i said Garnet, because i read it on "Refractive Idex Reference Chart" of the company i bought my Refractometer. It says 1.696 to 2.030 for general Garnet.

Author:  Bryan Clark [ Mon Aug 05, 2013 3:24 pm ]
Post subject:  Re: Inclusions in Red Stone

Too low for garnet, pyrope garnets typically start at 1.714, but since they almost always form w/ almandine, you typically see these reddish pyrope/almandine ~1.74ish or higher (more like 1.77) inclusions look natural, but unless the reading was incorrect... the hunt continues

Author:  Swishman [ Tue Aug 06, 2013 10:20 am ]
Post subject:  Re: Inclusions in Red Stone

Judging from inclusions, surface condition and facet junctions, coloration, and data you supplied, look towards Willemite as a possibility. Not commonly seen faceted, but the inclusions are possible, brittle so facet junctions being abraded are likely, etc.

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