Hi, the stone is double refractive, the appraiser/gemologist pointed that out very specifically today, I think my pictures weren't all that great because you can see it when you look at it in person
AHA! Thank you @voce and @chrono for this bit of info. I have a blue zircon that always looked strange and blurry to me. Now I know why! And I have read about double refraction, but yet I never looked for it in my zircon. I learn something new every day, thanks to PS!!
Your head-on picture
Example green zircon, where you can see double facets.
In blue, but this is what you should see when you have double refraction. There is a little "blurry" effect when you're looking from far away, because you're seeing "double" of the facets reflected through the table.
In the picture that you took, I don't see any doubling of the facets reflected through the table. This is not something that could be something your eye sees that the camera doesn't pick up. Every zircon should have double refraction. If you go look at Finewater Gems or Mastercut Gems zircons, you'll see this effect as well.
as fun learning about the fascinating properties of all different kinds of gemstones. I love odd and unusual stones, inclusions, huge oversized settings and golfball sized stones, oddball color schemes, etc.. so I'm always on the lookout for interesting jewelry to add to my growing collection which is why I love this ring. We'll see how tomorrow goes, the appointment is at 12:30!
Ha, I love that term, I thought the same thing, though the green on green vibe seems pretty intentional, maybe the previous owner loved green and swiped out a big pearl for the green stone? On closer inspection, the prongs that hold the stone match the rest of the ring and everything fits perfectly, it looks very custom so who knows? You saw the ring, too? I couldn't get it out of my head, I woke up in the middle of the night and made a pretty low offer and he accepted, i said i'd keep it as long as it wasn't glass so I guess it's mine
but I do look forward to finding out what this green stone is tomorrow! In the meantime, here is a picture of it with a longwave UV: (you can see the outline of the inclusions I think)
Haha, yes! When you first posted this ring, I thought..."I've seen this before!" I've spent countless hours looking at enamel jewelry recently, but THIS ring is not easily forgotten! So, yes, I looked at it before. I thought at first it was inlaid jade, until a closer look confirmed enamel. It's a stunner!
This gemstone is turning out to be quite a mystery! Due to the way the stone was cut and mounted, the gemologist couldn't get an accurate readout on ANYTHING without taking it out of the setting and they highly recommended not doing that so we decided to send it out to a lab. (she called in a favor with her friend at the lab so they'll going to hurry for me and let me know by next week so check back 
and she would never speculate unless she was 100% positive, she also told me google is a dangerous place and no one would ever make a decent judgement based on photos alone...as I go to google photos of what this thing could be! 
Thanks for all your help, i appreciate every response!
This taught me that synthetics are really, really common, look great, and must be so cheap they are used instead of glass, and to always insist on a cert when spending more than pocket change on a colored stone!!!!
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