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Please help id stone

nala

nala

Ideal_Rock
Premium
Joined
Oct 23, 2011
Messages
7,346
Any ideas what this could be? The diamonds are genuine. The stone goes from blue to greenish around the edge. image_2066.jpg
 
Looks like a sapphire (blue). Some Montana's have blue & green, but it's usually (in what I have seen) more intermingled. That is a pretty divisive line. Hopefully someone with more expertise will chime in. It's a pretty ring though! Bet that baby sparkles like madness!
 
I want to add that the opposite end shifts to lavender.
 
That setting is gorgeous, in all it's halo-glory. :love: :love: :love:

I LOVE halos, and that is one of the prettiest I've seen on PS.

Not sure what the stone is though. I mean it could be a sapphire, but it's not possible to properly id it from a photo.
 
I would guess a sapphire too.
 
Very nice ring!!!

Could be a tanzanite too - some in trade call this variety "mardi gras" - a mix of blue and green.
 
My sapphire has a very slight greenish tinge on one side, not unlike this one. You can only see it at a certain angle under certain lighting if you're looking for it. Hmmm, you can see it on my avatar, but I swear it's not that obvious all the time. Gorgeous halo, BTW.
 
Marlow|1407046884|3725251 said:
Very nice ring!!!

Could be a tanzanite too - some in trade call this variety "mardi gras" - a mix of blue and green.
Click to expand...

Agreed. In browsing thru the respected vendors' sites today, one had "fancy" tanzies that presented similar qualities, and I forgot to come back and comment on that.
 
Tanz is a good suggestion too. Whatever it is, that is a really really gorgeous ring! Unusual halo design.

--- Laurie
 
I'm with TL - gorgeous halo :))

I would have ventured parti-sapphire, but they are usually a blend of blue/green/yellow or some combination thereof. I believe I can see the purple you are referring to on the bottom of the oval and that sort of throws a spanner in it for me. Best to take it to an appraiser perhaps to get a first idea and then decide if you want to pursue it through AGL.

The other option might be tourmaline?
 
It could be anything at all; tanzanite, tourmaline, sapphire, spinel, who knows? The colour zoning leads me to think it might be a sapphire but it's best to have someone with the proper lab tools/equipment check the stone to make that call.
 
Looks like a tanzanite to me
 
Hi all! Thanks for your replies. I plan to get it checked out as soon as possible and will post an update! The seller told me that she was unsure but she thought it was a tanzanite, so I guess I will see...
 
How old is the stone? If it's on the older side, and has no damage except for minor facet abrasion, I would guess sapphire. I think an older tanzanite would have durability issues in a ring, unless it was only worn on occasion.

When in doubt, have it tested. For $75, it can be tested mounted by AGL:
http://aglgemlab.com/pricelist/
 
I'm thinking Tanz, too. I love the color banding.
 
So I wanted to post an update. One of my jewelers who does mostly repair work for me and sells colored stones was very stunned and thought it was synthetic. So I mentioned the possibility that it was a tanzanite, and then, he inspected it again, and said that it was possible, but that he himself does not carry tanzanite. So, he offered to take it to his other gem specialist friend, who was also torn between synthetic and tanzanite. What does this mean :confused: :confused: :confused: :confused:
 
It means you need to send it to AGL if you want a definitive answer. Regular jewelers don't have the equipment to test it & are not generally familiar enough with CS to make a good guess, as your jeweler demonstrated. AGL can tell you if it's real, what it is, and if it has been treated & how. It's such a gorgeous ring, I'd want to know for sure -- it doesn't cost much for the report. Hope you let them look at it -- and let us know!

--- Laurie
 
JewelFreak|1407283510|3726847 said:
It means you need to send it to AGL if you want a definitive answer. Regular jewelers don't have the equipment to test it & are not generally familiar enough with CS to make a good guess, as your jeweler demonstrated. AGL can tell you if it's real, what it is, and if it has been treated & how. It's such a gorgeous ring, I'd want to know for sure -- it doesn't cost much for the report. Hope you let them look at it -- and let us know!

--- Laurie
Click to expand...


Yes, it's looking that way. Thanks for the link. Unfortunately, the insured shipping will probably cost more than the actual testing! So for now, I plan to take it to a few other local jewelers.
 
They use glass, synthetic spinell or corund - all easy to detect.

There is no synthetic tanzanite - it is forsterite ( peridot is an intermediate of fayalite and forsterite) and comes close to tanzanite (RI) - but also easy to detect.

Google Hannenman tanzanite filter.

Then many here should think about buying a refractomer - you get a good one around $200 !
There are tutorial video on another forum (GO) and it is easy to use and fun!!!!

Believe me - I have a lot of experience and discovered a lot of gems in my own collection as something else.

I purchased a lot spinel twice - both times they mixed rhodolite into the lot ( Sri Lanka ) - it took me a few minutes!!

It is cheaper then sending every gem to a lab and you don't waste time.

A refractometer, polariscope and a dichroscope. The hanneman filter set is a good addition.
 
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