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 Post subject: Red/orange half black Tourmaline?
PostPosted: Fri Jul 10, 2020 12:17 am 
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Hello there =)
I have a gemstone I purchased as red Tourmaline/Schorl, and it appears as such given its growth pattern, but the colour I have never seen before,
as it is not the typical Rubellite tone you normally see when searching for red Tourmaline, which is normally a pinky/purple raspberry red for Rubellite,
and this is more of an Orange/Red colour, and it is also half solid black as well?

Only half of it is gemmy and translucent with colour, the other half is a solid opaque black.
It weighs 180ct, and other than the photos and weight, that is all I know of it so far.

Unless it is just a large piece of rough red/orange black Tourmaline, and I am over thinking its colour appearance. lol
I have been dealing in stones and gems for years now, and this is the only piece of Tourmaline I have ever seen like this so far, if so.
But I guess there is a first for everything. lol
Any thoughts are welcome and appreciated as to its identity. =)


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 Post subject: Re: Red/orange half black Tourmaline?
PostPosted: Fri Jul 10, 2020 12:39 am 
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I am familiar with this material, or very similar. It is a schorl out of Africa which apparently either edges towards or has zones of some other tourmaline species. While it looks red through the side, this is actually a very thin layer of dark red around a much lighter green center. I have sliced a few of these and got some slices with a green center and a very dark rind.

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 Post subject: Re: Red/orange half black Tourmaline?
PostPosted: Fri Jul 10, 2020 9:58 pm 
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I am not overly conversant with the tourmaline group, but couldn't this possibly be a dravite/schorl tourmaline? If you could get an RI on it you may be able to determine if it is.


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 Post subject: Re: Red/orange half black Tourmaline?
PostPosted: Sat Jul 11, 2020 10:13 am 
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Stephen Challener wrote:
I am familiar with this material, or very similar. It is a schorl out of Africa which apparently either edges towards or has zones of some other tourmaline species. While it looks red through the side, this is actually a very thin layer of dark red around a much lighter green center. I have sliced a few of these and got some slices with a green center and a very dark rind.


I do think you are absolutely correct, Stephen!
That makes sense to me as well, as I wasn't sure due to its slightly different appearance than the material I am normally used to, but its nice to put a pin point on the matter!
I thank you for your speedy response! :D
I would have gotten it tested professionally, but many shops and facilities are shut down right now, so patience is a virtue it seems. lol But I think you hit the nail on the head with this one, so I am happy none the less!

Here are a few other photos I shot last night, just for the sake of sharing. :smt048


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