Help Id coloured stone please

[Gema]

Hello, I am new to this forum although I have been lurking around for some time.
I picked this ring up at auction a year ago, it was ugly and dull however after a clean it displays a lot of brilliance and fire.
I was hoping some of you that know about coloured stones could help me identify what it is as I love the colour and sparkle.
Depending on lighting it changes from lime green to greenish yellow.
It has a dark spot in the centre, that becomes more noticeable in different lighting.
I have used a diamond tester on it and it tested as a diamond but i don’t think it is a diamond. And i think it has to much brilliance for a sapphire.
Any idea what it could be? I am just curious and as I like it, i wouldn’t mind buy more items of the same stone.
Any ideas would be appreciated.

 

[chatoyancy]

A chrysoberyl?

 

[Gema]

A chrysoberyl?

Thanks Chatoyancy, I googled chrysoberyl and you could be right. I will do some reading on them as I have been stumped as to what this could be. thanks

 

[chatoyancy]

Thanks Chatoyancy, I googled chrysoberyl and you could be right. I will do some reading on them as I have been stumped as to what this could be. thanks

Good luck in your quest to find out what kind of gem it is. It’s beautiful! I love my Chrysoberyls. I did not even give them a thought until I came onto Pricescope.

 

[T L]

It does look like a chrysoberyl, but no way to be sure without a good gemologist checkkng it. If it is a chrysoberyl, congrats, it's a super durable/hard/lustrous gem, and your looks like a nice color. I really like the lemony/lime ones vs. the more brownish yellow ones. JMO.

 

[Nosean]

A chrysoberyl would not show such a dark center.

Sapphire would be my guess - bicolor - yellow with a blue zone...
Stupid question - the blue zone is in the stone - part of the pavillion?
May a pic from the side.

 

[arkieb1]

Take it to a pawn shop, jewellery store that has proper testing equipment or a valuer and ask them what it is my guesses would be sapphire then diamond, the blue in the middle if you really can see that in real life means it's probably not a chryso, (more likely a sapphire) if you can't see that in real life than I agree that could also be an option. It could also be a synthetic yellow diamond, a synthetic yellow beryl, I can't tell from a photo.

 

[pwsg07]

I think it is a parti colour sapphire. What is the size? Where did you get it? It’s colour is intense and it is well cut. Please show the side and the back to give more clues to the identity of the stone.

 

[T L]

Is the bluish spot in the middle blue due to a reflection of something blue, or is it really blue. In your photo, I see what looks like blue reflection in the crown facets as well. If it tested positive as a diamond, it could be yellow moissanite (a man made diamond stimulant). Some older diamond testers were fooled by moissanite. There are newer diamond testers that can differentiate.

 

[Frost]

I'm not sure because I'm a total tool for diamonds, but from what I remember, you could test it with a different type of a tester which relies on electrical conductivity. Diamond doesn't conduct, moissanite does I think. Should be possible if you take it to a jewellery store, I don't think they'd even charge for that.

I don't think it could be chrysoberyl so much because of the color zoning (if it is color zoning) - that would be pretty rare - and because it tested as diamond on the tester. If it is a chrysoberyl, then you have a pretty rare and beautiful stone.

Other things with lots of brilliance: zircon, cubic zirconia... Zircons which haven't been broken down by radiation from within over millions of years can and do have extremely high brilliance and display fire as well. Those 'restored' to their crystal glory by heating to high temperatures do too. It's not a diamond, but it does sparkle far more than sapphires, as you mentioned.

 

[shinyrocks]

My bet would be on sapphire. Looks like a blue "zone" right at the tip. I would get it checked! Regardless, a very pretty stone.

 

[Barrett]

Oro verde quartz
If you got it at auction, what was the auction house selling it as?
What is the metal used for the ring? That is a broad way of determining if the stone is worthy of something like 14-18K gold. If 10K, silver, or something comparable, then I wouldn't hold my breath as to it being something valuable

 

[Diiiiis]

it looks like a demantoid to me.