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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Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
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.
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
Joined: Mon Oct 17, 2005 11:10 am Posts: 299 Location: Illinois
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.
_________________ I love the smell of Methylene Iodide in the morning...
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:
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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
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.
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
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.
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?
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
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.
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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