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 Post subject: Ruby?...
PostPosted: Thu Dec 07, 2017 5:33 pm 
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Checked with super magnets - not magnetic
Double refractive
Tried to cratch it with a Sapphire - neither got scratched
the color looks red-pink like 2 colors from different angles...pigeon blood?...
like....15C...?
(lovely earrings 19K gold)
What do you think?
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 Post subject: Re: Ruby?...
PostPosted: Thu Dec 07, 2017 6:56 pm 
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Good grief.
Trying to identify a faceted gem with a scratch test? That is beyond foolish.
Do you own any gem testing tools?
Polariscope, refractometer, uv light. hand held spectroscope?

Ruby is easily identifiable using visual optics. Won't separate natural from synthetic. That would be done by identifying the nature of the inclusions.


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 Post subject: Re: Ruby?...
PostPosted: Thu Dec 07, 2017 7:24 pm 
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Barbra Voltaire wrote:
Good grief.
Trying to identify a faceted gem with a scratch test? That is beyond foolish.
Do you own any gem testing tools?
Polariscope, refractometer, uv light. hand held spectroscope?

Ruby is easily identifiable using visual optics. Won't separate natural from synthetic. That would be done by identifying the nature of the inclusions.


I have zero understanding really I'm just passing what my brother told me so I said I would ask...
He said he took a risk with the scratching (It does sign 19ct gold there and something that looks like "lanf\m" or Laxm and that its vintage so the chances of being real are more likely) but we have no tools really. he tried the magnets and scratching I guess to eliminate other elements...
he says that with the magnifying glass X10 there are no bubbles but there is natural precipitation (what he thinks would not happen with lab manufacture as they come out clear as synthetic...?).
he thinks there is evidence of heating (just by comparing microscope pictures), and that the precipitations shape looks like glue (evidence for healing?...)
no lead inside
that's about it...
P.s: seems like buying a UV lightbulb is inevitable lol


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 Post subject: Re: Ruby?...
PostPosted: Thu Dec 07, 2017 10:54 pm 
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My feeling looking at this photo that it is garnet. How do you know it is not singly refractive with ADR? Ruby has been synthesized for well over a hundred years. You need to drop into a jewelers for a chat.

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 Post subject: Re: Ruby?...
PostPosted: Fri Dec 08, 2017 7:27 am 
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John Fitzgerald wrote:
My feeling looking at this photo that it is garnet. How do you know it is not singly refractive with ADR? Ruby has been synthesized for well over a hundred years. You need to drop into a jewelers for a chat.


He said that he tried to scratch it with a sapphire and it had no effect on both and garnet is weaker so how could it be a garnet?
to check the sapphire he scratched quartz with no problem so it must be above 7.5-8.
here's a picture of the sapphire checking:
Attachment:
IMG_5167.JPG
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by the fact it easily scratched the quartz, plus the color what else could it be? 8-8.5
about the refractiveness, under a light, it shows letters as double with some bend. it also has a changing light pattern. looks dark to transparent pink and glowing red at different angles.
please advise
thanks


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 Post subject: Re: Ruby?...
PostPosted: Fri Dec 08, 2017 11:17 am 
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I still think you need to drop in your friendly jewelry store. You can send tons of photos but you need someone to look at it.

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 Post subject: Re: Ruby?...
PostPosted: Fri Dec 08, 2017 11:32 am 
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John Fitzgerald wrote:
I still think you need to drop in your friendly jewelry store. You can send tons of photos but you need someone to look at it.


And what's the fun of that? :))
Next step - under UV
will share the results.


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 Post subject: Re: Ruby?...
PostPosted: Fri Dec 08, 2017 12:18 pm 
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yay....someone has surpassed me!


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 Post subject: Re: Ruby?...
PostPosted: Fri Dec 08, 2017 9:10 pm 
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Your right. If people sought professional opinions this would be a boring thread. Have fun.

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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 2:19 pm 
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Instead of buying a Uv light bulb, we were thinking to buy this microscope -
https://www.youtube.com/watch?v=t3bXWcY2khI
it's not expensive but the real question is if its enough for taking out results with pictures that as experts you could tell more about the gems.
If it's not enough, what would you recommend?
Many Thanks


Last edited by Solomon on Sat Dec 09, 2017 2:30 pm, edited 1 time in total.

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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 2:27 pm 
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I don't have to look Solomon.
What you are overlooking is that the instruments alone are only helpful when you are qualified to properly interpret the data you are given.
You are not.
Bring your unknown to a professional who is qualified.


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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 2:32 pm 
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Barbra Voltaire wrote:
I don't have to look Solomon.
What you are overlooking is that the instruments alone are only helpful when you are qualified to properly interpret the data you are given.
You are not.
Bring your unknown to a professional who is qualified.


That's the thing, Barbra, We want something that will produce results that we can share here for the experts to look at.
a sufficient microscope that will take out the zoom pictures for You to look at.
just not too expensive...
what would you recommend?


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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 2:39 pm 
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OK, you need a polariscope, a refractometer, a microscope, a hand-held spectroscope or a Gemmoraman if you can afford it and the knowledge and experience to properly interpret the results these instruments give you.

That experience is something you are not appreciating.


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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 2:43 pm 
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Barbra Voltaire wrote:
OK, you need a polariscope, a refractometer, a microscope, a hand-held spectroscope or a Gemmoraman if you can afford it and the knowledge and experience to properly interpret the results these instruments give you.

That experience is something you are not appreciating.

Wow, all that just for checking the ruby?... :(
So what do you think we should do?
my brother is afraid to leave it in some jewelry store...
Your experience is highly valued that's why we wanted to share results here. for you guys - the experts.


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 Post subject: Re: Ruby?...
PostPosted: Sat Dec 09, 2017 3:49 pm 
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Do you live in Israel? I reverse checked your IP
Try
http://www.igc-gem.com/israellab.html


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