October 27-28—SACRAMENTO, CALIFORNIA: 82nd Annual Gem, Jewelry, Mineral and Rock Show; Sacramento Mineral Society; Sat. 10-5, Sun. 10-4
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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Sat Sep 24, 2016 10:59 pm 
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I've never seen these types of inclusions in spinel.

Crazy.


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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Sun Sep 25, 2016 8:35 am 
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Yes, Barbra. My experience is not comparable to yours. But I also never seen nothing like this. I browsed all about the inclusions in spinel, I could find in prints and on the Internet, but did not find anything similar.

I think I know why... Working with high quality gemstones because mostly serving jewelry industry, gemologists rarely dealing with so low quality cheap samples... But usually cheap poor quality stones are often carriers of all sorts of miracles and unusual ... :)

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Mon Oct 03, 2016 9:20 pm 
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Pleochroism in Malkhan tourmaline crystals. Photographed under reflected light, using microscope with polarizer.

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Tue Nov 15, 2016 8:04 pm 
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Ural's demantoids.

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Wed Nov 16, 2016 5:34 am 
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Thanks to Mark, I have now my own polarbear whichs shakes all the water off after swimming ;)

Great pic Mark

comes from a recently bought canadian demantoid.


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Dem3 session 2 rfl  df 5 100x edit_small.jpg
Dem3 session 2 rfl df 5 100x edit_small.jpg [ 156.75 KiB | Viewed 923 times ]

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Wed Nov 16, 2016 6:32 am 
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arglthesheep wrote:
Great pic Mark


And great stones too (some of them !) :wink:


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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Wed Nov 16, 2016 8:50 am 
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Eeee-hhhh... Not to mix up...:)

Polar Bear has born in demantoid in Quebec.

11 stones on the pic are Ural's.. :)

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Thu Nov 17, 2016 5:23 pm 
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The 0,75 ct makes me a little bit nervous..... :shock:

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Thu Nov 17, 2016 8:16 pm 
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Ha-ha, Marlow... Not only you... :)

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Sat Nov 19, 2016 11:24 pm 
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Urals's demantoid... 5.26 ct, d=10.3mm Photographed under dark field illumination, 20x

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Sun Nov 20, 2016 2:41 am 
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Wow, 5,26 ct!!

Great picture and great horsetail! =D>

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 Post subject: Re: Usual and unusual gemstones and inclusions
PostPosted: Tue Nov 22, 2016 10:25 am 
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Fireworks!

Ural's demantoid. 1.78 ct, d=7.15 mm. Dark field illumination, 40x, FoV 6.0 mm

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