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 Post subject: Any idea as to what this stone might be?
PostPosted: Tue May 22, 2018 6:47 pm 
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Hi,

Now I know that I should not be posting photos only but I just want a few guesses as to what this stone might be.

Under a daylight spotlight it looks to have a reddish/blue hue, however it is very dark and not much light seems to pass through.

I can tell you that it is set in a lovely looking hand crafted Silver (Lower Shank) & White Gold (Upper Shank/Gallery/Setting) acid tested ring, and looks to have some age.

I will be taking it to a jewellery soon enough for evaluation but would be interested in your thoughts first.

Also if anyone can hazard a guess at the age of the ring (No hallmarks) etc, please feel free.

Many thanks,
Indy


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Wed May 23, 2018 11:49 am 
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I was sure, this was going to be another vanadium doped synthetic sapphire inquiry, but it's not.
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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Wed May 23, 2018 1:12 pm 
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On my monitor the 3rd and 4th pic of the stone shows some green but the last shows red, were the shots taken in different light?
If so it might be alexandrite or a synthetic.
It seems strange to me to have part of the shank in silver and the rest in white gold.
When you get it to someone who can really check it out please come back and let us know.

Thanks, Jim


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Wed May 23, 2018 3:12 pm 
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Hi JCD,


Many thanks for replying.

The photos were all taken at the same time under a day light/white light spotlight.

The shank is definitely made of sliver & white gold as I deal in silver & gold jewellery and can say without a doubt.

It's the stone that's really puzzling me due to the colours it's giving off which is why I want to get a second opinion from a jeweller.

Cheers,
Indy


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Wed May 23, 2018 5:25 pm 
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If the stone is different colors using the same light source it rules out alex, both synthetic and natural.
Is the stone backed or open?
If open, can you shine a light through it and report back with any additional characteristics?
Thanks


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Thu May 24, 2018 8:37 am 
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Could it be usambara effect tourmaline? High extinction (the stone looks quite black in the last picture) may be further evidence...

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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Thu May 24, 2018 12:21 pm 
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Good call Keirkof.
We still need more clues.


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Thu May 24, 2018 3:20 pm 
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Hopefully I can take better iamges tomorrow and try to shine a light through it also.

Indy


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Fri May 25, 2018 12:34 pm 
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Hi,

Well I took a few more photos of the ring with a small torch trying it's best to shine through.

One photo may show light shining through the top edge (Brownish), but I'm not convinced this is due to the light shining through!

If you look at the bottom edge of the stone in some of the photos, there looks like a blueish hue shining through.

The stone has a flat back, and is not backed.

I took it to two jewellers today, one said maybe onyx, the other had no idea.

Cheers,
Mark


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Fri May 25, 2018 12:36 pm 
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sorry submitted post before uploading all photos lol


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Sat May 26, 2018 9:02 am 
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I would have said onyx too, or black glass, despite the strange color flashes which are difficult to interpret.
Maybe just reflections of some sort.


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Sat May 26, 2018 10:43 am 
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ditto


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 Post subject: Re: Any idea as to what this stone might be?
PostPosted: Sat May 26, 2018 3:03 pm 
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I also agree., many thanks


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