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Ametrine or not?

denis0007dl

denis0007dl

Rough_Rock
Joined
May 9, 2025
Messages
11
Hello, purchased "Ametrine" 105 carats, can anyone just based on picts tell if its real or not?

I have nice video but cant upload it here...

Thanxs for comments,
Kind regards from Croatia
 

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Real
As in real citrine on half the stone, or half of the amethyst heated to change color ?
Real as in not grown in a lab, then treated?
Real as in fitting the definition of Ametrine vs color zoned amethyst? Or real but not very great example of the color ways.

An independent lab is the only way to be sure if you do not trust the vendor.

Other than me saying the colors as they appear in the pictures do not jive to what I think as of as ametrine color ways.

Best wishes.
 
...three more images attached...
Seller offered me for additional costs any certificate, and I choosed cheaper one which picture is attached..f70d3707-7426-4419-8d12-9437e680eb59.jpeg
69997fbe-2117-461d-9aa3-a014b9cf3fef.webp
6c5c6f02-00ef-42f3-88ee-ad9c7e625468.webp
 
denis0007dl said:
Hello, purchased "Ametrine" 105 carats, can anyone just based on picts tell if its real or not?

I have nice video but cant upload it here...

Thanxs for comments,
Kind regards from Croatia
Click to expand...

I think you mean Amethyst
 
Hopefully someone here has insight on this lab, GFCO.
To me it looks like a zoned amethyst color rather than ametrine color, because there is no distinct orange/yellow face-up:
 
Autumn in New England said:
Absolutely natural, and one of the ways you can tell is by the zoning which is quite subtle. If this were created, it would be a very stark contrast.

Welcome to the forum!
Click to expand...

Thank you =)2

Ok, and do you think there is Citrine there, or its still not clear by judging on pictures and videos?

Thanxs everyone for comments, really appreatiate that!

Kind regards from Croatia,
Denis
 
denis0007dl said:
Thank you =)2

Ok, and do you think there is Citrine there, or its still not clear by judging on pictures and videos?

Thanxs everyone for comments, really appreatiate that!

Kind regards from Croatia,
Denis
Click to expand...

Report says Amethyst
 
autumngems said:
Report says Amethyst
Click to expand...

Sure, I see it, but I see also reports saying same, and then another report say different. Want to hear here experienced ond/or knowledgable ppl comments here.

Thanxs a lot everyone,
Denis
 
Autumn in New England said:
Absolutely natural, and one of the ways you can tell is by the zoning which is quite subtle. If this were created, it would be a very stark contrast.

Welcome to the forum!
Click to expand...

By saying very stark contrast, would be that one considered as non natural?
www.ebay.com

41.30 carats purple to golden yellow natural ametrine bolivia - 22021814 | eBay

SKU: 22021814. Origin Bolivia. Weight 41.30 carats. Color Purple to Golden Yellow. From raw to facet - our sincere dedication and devotion helped us to bring you a vast array of quality gemstones at deal price.
www.ebay.com
s-l1600 (1).jpgs-l1600 (2).jpgs-l1600.jpg
 
denis0007dl said:
Thank you =)2

Ok, and do you think there is Citrine there, or its still not clear by judging on pictures and videos?

Thanxs everyone for comments, really appreatiate that!

Kind regards from Croatia,
Denis
Click to expand...

As I'm sure you know, amethyst and citrine are both quartz just colored by different trace elements (varying iron deposits, some of it oxidized). I definitely see some yellow zoning in there. As I said, it is subtle, but could one call it ametrine? Sure. Do I think it is representative of fine ametrine? I like to see more defined zoning and as close to 50% as possible. So something like this:

20.04_bicolor_ametrine_6153.jpg
 
Autumn in New England said:
Absolutely natural, and one of the ways you can tell is by the zoning which is quite subtle. If this were created, it would be a very stark contrast.

Welcome to the forum!
Click to expand...

I was not aware that subtle zoning indicates natural origin, but now that I think about it, I haven't seen a bicolor synthetic in any material that was not a stark split.
 
toomuchB said:
I was not aware that subtle zoning indicates natural origin, but now that I think about it, I haven't seen a bicolor synthetic in any material that was not a stark split.
Click to expand...

Like anything else, it's not a guarantee, but one can sort of make an educated guess. Plus, you can see natural banding in this material. When you look at synthetic stones, they look crystal clear like, well, glass. :geek2: They're so garish... it's hard to miss.
 
denis0007dl said:
Sure, I see it, but I see also reports saying same, and then another report say different.
Click to expand...

GFCO is not one of those labs. It’s an amethyst, and by the photos, a lovely one.
 
Autumn in New England said:
I won't speak for Avondale, of course, but for the weight? Even if it's simply amethyst, you did fine.
Click to expand...

Speak all you want. I don't often point my gaze towards such humongous stones. If I had to choose between 1ct and 100ct, I would go with the one carat stone every single time. :lol-2:

With that, said, a 1000$ comes up to about 10$ per carat which sounds like a more than fair price.
 
Avondale said:
If I had to choose between 1ct and 100ct, I would go with the one carat stone every single time. :lol-2:
Click to expand...

Same! I had the opportunity to buy a crazy big, untreated, gorgeous Uruguayan amethyst for a good price. I passed on it for a 3+ct. The bigguns are always tempting as a collector, but as far as designing jewelry around then, I must rebuff!
 
Autumn in New England said:
Absolutely natural, and one of the ways you can tell is by the zoning which is quite subtle. If this were created, it would be a very stark contrast.

Welcome to the forum!
Click to expand...

Found one GIA certified natural Ametrine with very stark contrast, attached pict.
So stark contrast theory true or not for unnatural ones?
am.jpeg
 
Last edited:
denis0007dl said:
Found one GIA certified natural Ametrine with very stark contrast, attached pict.
So stark contrast theory true or not for unnatural ones?
am.jpeg
Click to expand...

Big, BIG improvement... just about as nice as it can be in terms of the split and saturation. I'd need to see better photos of the color and cut though.
 
denis0007dl said:
Found one GIA certified natural Ametrine with very stark contrast, attached pict.
So stark contrast theory true or not for unnatural ones?
am.jpeg
Click to expand...

Sorry, I didn't mean that a stark contrast indicated it was a synthetic or simulant! I should have been more clear. What I meant was that a subtle contrast often indicates that it is natural (the purple/yellow split in fake ametrine tends to be very obvious). But there is plenty of this material out there that is both natural and has highly contrasted zoning. HTH!
 
denis0007dl said:
By saying very stark contrast, would be that one considered as non natural?
www.ebay.com

41.30 carats purple to golden yellow natural ametrine bolivia - 22021814 | eBay

SKU: 22021814. Origin Bolivia. Weight 41.30 carats. Color Purple to Golden Yellow. From raw to facet - our sincere dedication and devotion helped us to bring you a vast array of quality gemstones at deal price.
www.ebay.com
s-l1600 (1).jpgs-l1600 (2).jpgs-l1600.jpg
Click to expand...

I misunderstood... I apologize. I thought you were asking if that was a good example of a fine ametrine. This stone definitely looks natural.
 
Autumn in New England said:
I misunderstood... I apologize. I thought you were asking if that was a good example of a fine ametrine. This stone definitely looks natural.
Click to expand...
So, does that one on Ebay link down below looks natural or not by your personal opinion?

ebay.us

41.30 carats purple to golden yellow natural ametrine bolivia - 22021814 | eBay

SKU: 22021814. Origin Bolivia. Weight 41.30 carats. Color Purple to Golden Yellow. From raw to facet - our sincere dedication and devotion helped us to bring you a vast array of quality gemstones at deal price.
ebay.us

Thank you,
Denis
 
denis0007dl said:
So, does that one on Ebay link down below looks natural or not by your personal opinion?

ebay.us

41.30 carats purple to golden yellow natural ametrine bolivia - 22021814 | eBay

SKU: 22021814. Origin Bolivia. Weight 41.30 carats. Color Purple to Golden Yellow. From raw to facet - our sincere dedication and devotion helped us to bring you a vast array of quality gemstones at deal price.
ebay.us

Thank you,
Denis
Click to expand...

Yes, it does indeed look natural to me. Of course, to be absolutely certain, it would need to be examined in person by a G.G. Sorry again for the confusion... I was reading too fast!
 
Odyssey44 said:
You sexy beast, you!
Click to expand...

I called my boyfriend's work back in the day for the first time and got the secretary... sure enough, "please hold, sir."
blusher.gif
 
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