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 Post subject: Tourmaline
PostPosted: Thu Mar 04, 2021 10:54 pm 
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Got another package in. Afghanistan tourmaline, great pieces in this one!!


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 Post subject: Re: Tourmaline
PostPosted: Thu Mar 04, 2021 11:10 pm 
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Those first two do not look all that great on a faceting level, but there does look like some very nice clean ones in the other photos. Is the large crystal open or closed? Looks like maybe closed.

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 Post subject: Re: Tourmaline
PostPosted: Fri Mar 05, 2021 2:40 pm 
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The first two pics are the same stone, most of the inclusions will cut out but the blue is really hazy. I'm going to cut it just to see but I don't expect much. There are some nice clean stones on the smaller end, good color and size, should cut some nice stones out of those ones.
The large is closed unfortunately.


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 Post subject: Re: Tourmaline
PostPosted: Fri Mar 05, 2021 11:44 pm 
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The first one (and second, I guess) is my favorite. The pleochroic colors are awesome. :D


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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 4:21 am 
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The two photos of the first stone give a glimpse of wonderful tones. I love it!

It is so beautiful as well, it is a shame to cut it. I would see it mounted as a pendant as it is ...
it is an idea which engages only me. I am neither a lapidary nor a jeweler

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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 1:19 pm 
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It cracked in half basically right after I had a decent shape going but I'll cut the two pieces it broke into after I finish the other stones. Also it is only the blue that makes it look closed or closes the c where the green is its open.


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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 2:01 pm 
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That is the crystal in the first two photos? Looks like the smaller of the two has a visible fracture or is that something showing threw from beneath. Looks very heavily included as well. Closed is closed no matter the color in most cases.

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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 4:24 pm 
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The C axis doesn't looked close in the last two pictures to me?


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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 5:29 pm 
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I was talking about the crystal just above the ruler in the first set of pictures posted. Is that the crystal that split in half?

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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 10:09 pm 
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Right, it's all the same stone (2 now). It lightened up quite a bit after cutting but still won't be great because of the milky blue. The smaller piece maybe has something going for it, the blue is spread out across most of it now.


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File comment: the blue triangle is why this piece looks closed
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 Post subject: Re: Tourmaline
PostPosted: Sat Mar 06, 2021 10:19 pm 
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1bwana1 wrote:
The C axis doesn't looked close in the last two pictures to me?

Right, it's faceted now and the green area is open but the blue isn't. When it was one piece the top was open because there was no blue coloring there but the bottom closed because the blue was too dark (concentrated) or its a directional thing I don't know.


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 Post subject: Re: Tourmaline
PostPosted: Wed Mar 10, 2021 4:15 pm 
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This is a piece from the pink/red lot I just finished cutting. Somehow I missed a huge scratch across the table so I have to re-do that but the color is amazing. Weighs .8ct. Measures 5.79 round x 3.57 deep mm


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 Post subject: Re: Tourmaline
PostPosted: Wed Mar 10, 2021 4:54 pm 
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Couple more pics with the loupe.


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 Post subject: Re: Tourmaline
PostPosted: Wed Mar 31, 2021 12:11 pm 
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Tourmaline and my brothers fist stone topaz.
Small stones... The topaz is like 1.6ct the octagon tourmaline only .7ct, rectangle is like .3ct and the small green with no table wont read on the scale.
I keep having problems with fractures when I'm cutting rectangles. I've had to throw away like 3 so far. 1 had no visible flaws and fractured straight up the middle :cry: I don't understand what the problem is, I'm not heavy on the quill, I used 1200 to rough in and it still happened, lots of water, little bit, doesn't matter. Any advice? I have only tried 1 really clean piece so far in rectangle and it fractured, but the three there were very included and cut pretty well (the green has a small fracture).


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 Post subject: Re: Tourmaline
PostPosted: Wed Mar 31, 2021 12:38 pm 
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Pic


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