Fluoresence

[Round Halo Lover]

Hi everyone, I tried on a ring in a store yesterday. It was an E colour solitare, 2.2ct in a plat setting. It was

beautiful firey cut, yummy!!!

Anyway, we went outside with the SA to see it in natural light and when I looked at it on the side profile I could see a lilac glow so it definately has fluoresence, which I was happy about as I love the so called ''white blues''. I just want to know if it is glowing slightly in natural daylight will the effect be stronger in direct sunlight? Thanks in advance

 

[Lorelei]

Date: 2/28/2010 1:16:04 PM
Author:Round Halo Lover
Hi everyone, I tried on a ring in a store yesterday. It was an E colour solitare, 2.2ct in a plat setting. It was

beautiful firey cut, yummy!!!

Anyway, we went outside with the SA to see it in natural light and when I looked at it on the side profile I could see a lilac glow so it definately has fluoresence, which I was happy about as I love the so called ''white blues''. I just want to know if it is glowing slightly in natural daylight will the effect be stronger in direct sunlight? Thanks in advance

Hi RHL

Just to check did it mention fluorescence on the report? I just wanted to mention this as sometimes diamonds can pick up the blue of the sky just in case that was what you were seeing.

 

[WinkHPD]

Date: 2/28/2010 1:16:04 PM
Author:Round Halo Lover
Hi everyone, I tried on a ring in a store yesterday. It was an E colour solitare, 2.2ct in a plat setting. It was

beautiful firey cut, yummy!!!

Anyway, we went outside with the SA to see it in natural light and when I looked at it on the side profile I could see a lilac glow so it definately has fluoresence, which I was happy about as I love the so called ''white blues''. I just want to know if it is glowing slightly in natural daylight will the effect be stronger in direct sunlight? Thanks in advance

Possibly, sounds like a yummy stone. Just be sure to see it in direct sunlight just to assure yourself that it is not an overblue.

Wink

 

[Round Halo Lover]

Thanks Lorelei and Wink.

Lorelei - We tried the ring on and then went to lunch to chat and think about it, boyf was looking like he needed a stiff drink

, anyway we went back to the store and it was pretty busy and asked to see the cert, the lady that has the certs filed away was on her break or something so we sadi we would come back again another day (we were running late to meet someone).

Also as it is a HUUUUUGGGGEEEEE amount of $$$$ I wanted boyf to have a good think about it before we looked at it again in great detail. (also to not get my hopes up - it was a good bit over budget).

Wink- yes it was a magnificent stone, a real fireball. I know that with cut it can all come down to numbers but I can honestly say this diamond just lit up the room. I''m nearly afraid to see the cert beacuse if the numbers aren''t in the ideal proportions (< 2, HCA) I know it will turn me off but I keep saying to myself that a stone should be bought with your eyes.

 

[Lorelei]

Date: 2/28/2010 1:30:37 PM
Author: Round Halo Lover
Thanks Lorelei and Wink.

Lorelei - We tried the ring on and then went to lunch to chat and think about it, boyf was looking like he needed a stiff drink

, anyway we went back to the store and it was pretty busy and asked to see the cert, the lady that has the certs filed away was on her break or something so we sadi we would come back again another day (we were running late to meet someone).

Also as it is a HUUUUUGGGGEEEEE amount of $$$$ I wanted boyf to have a good think about it before we looked at it again in great detail. (also to not get my hopes up - it was a good bit over budget).

Wink- yes it was a magnificent stone, a real fireball. I know that with cut it can all come down to numbers but I can honestly say this diamond just lit up the room. I''m nearly afraid to see the cert beacuse if the numbers aren''t in the ideal proportions (< 2, HCA) I know it will turn me off but I keep saying to myself that a stone should be bought with your eyes.

LOL! It happens....

What I would go back and see the report or call them and get the report number, then we can look the stone up online and get the details that way. Also some that score over 2 on the HCA can sometimes be fine so don''t let that put you off.

 

[Round Halo Lover]

Thanks Lorelei, they are giving us a call during the week so I will as for the number and get back. They said their stones are either GIA or IGI, are these acceptable?

 

[CharmyPoo]

I once had the chance to view two D color cushions - one with very strong fluoresence and one without. The photos can be found in this thread - https://www.pricescope.com/community/threads/come-see-very-strong-blue-fluorescence-versus-none.104988/. The diamond with very strong blue fluoresence glowed a beautiful liliac blue in sunlight but was completely white indoors.

 

[WinkHPD]

Date: 2/28/2010 1:46:26 PM
Author: Round Halo Lover
Thanks Lorelei, they are giving us a call during the week so I will as for the number and get back. They said their stones are either GIA or IGI, are these acceptable?

GIA yes. IGI, well, maybe yes, maybe no, but why take chances with your hard earned money???

Wink

 

[Round Halo Lover]

Thanks Charmy and Wink.

Charmy, those are great photos to compare. Thanks for posting the link to your thread.

I will come back with more info once I get it.

 

[Round Halo Lover]

Date: 2/28/2010 1:19:08 PM
Author: Lorelei

Date: 2/28/2010 1:16:04 PM
Author:Round Halo Lover
Hi everyone, I tried on a ring in a store yesterday. It was an E colour solitare, 2.2ct in a plat setting. It was

beautiful firey cut, yummy!!!

Anyway, we went outside with the SA to see it in natural light and when I looked at it on the side profile I could see a lilac glow so it definately has fluoresence, which I was happy about as I love the so called ''white blues''. I just want to know if it is glowing slightly in natural daylight will the effect be stronger in direct sunlight? Thanks in advance

Hi RHL

Just to check did it mention fluorescence on the report? I just wanted to mention this as sometimes diamonds can pick up the blue of the sky just in case that was what you were seeing.

Lorelei - how right you are!!!! The dealer rang boyf today and told him that the repoet states no fluoresence.
Boyf forgot to ask which lab certified the diamond but the SA told me last week they only carry GIA and IGI. Dealer also said today that the cert states that the diamond is ''Tolkowsky Ideal Cut'' with ''8 perfect hearts and arrows''. OMG, can this be too goo to be true!!!! I''m freaking out here.......it''s like, my dream ring!!!!

 

[FB.]

Date: 3/1/2010 1:38:49 PM
Author: Round Halo Lover

Date: 2/28/2010 1:19:08 PM
Author: Lorelei

Date: 2/28/2010 1:16:04 PM
Author:Round Halo Lover
Hi everyone, I tried on a ring in a store yesterday. It was an E colour solitare, 2.2ct in a plat setting. It was

beautiful firey cut, yummy!!!

Anyway, we went outside with the SA to see it in natural light and when I looked at it on the side profile I could see a lilac glow so it definately has fluoresence, which I was happy about as I love the so called 'white blues'. I just want to know if it is glowing slightly in natural daylight will the effect be stronger in direct sunlight? Thanks in advance

Hi RHL

Just to check did it mention fluorescence on the report? I just wanted to mention this as sometimes diamonds can pick up the blue of the sky just in case that was what you were seeing.

Lorelei - how right you are!!!! The dealer rang boyf today and told him that the repoet states no fluoresence.
Boyf forgot to ask which lab certified the diamond but the SA told me last week they only carry GIA and IGI. Dealer also said today that the cert states that the diamond is 'Tolkowsky Ideal Cut' with '8 perfect hearts and arrows'. OMG, can this be too goo to be true!!!! I'm freaking out here.......it's like, my dream ring!!!!

GIA reports don't mention such things. The stone will therefore be IGI.
It is also likely that the grading will have been grossly inflated.
I've seen some fairly atrociously-cut stones given high cut grades by labs with less stringent grading than AGS or GIA.
Just because it says "ideal" and "H&A" doesn't mean that it's quite the same thing as a WF ACA H&A.

It would be preferable if we can see the proportions.

 

[FB.]

As an example of cut grade....here are some proportions that were awarded IGI''s "Excellent" cut grade:

Table: 60.5%
Crown angle: 35.3'' (14%)
Depth: 61.9%
Pavilion angle: 41.7'' (44.5%)
Girdle: medium.
Polish & Symmetry: VG

Check out it''s HCA score here:
https://www.pricescope.com/cutadviser.asp

 

[Round Halo Lover]

OH ok, the vendor is fairly reputable in this country, I haven''t seen the cert but am going back again this weekend to see it.

And there is no way it could be a bad cut, it lit up the entire room!!!

I''m no expert but it was bright, firey, sparkly and just

wow. If it is a bad cut then it''s fine with me!!!!

 

[FB.]

Check that it doesn''t show a black ring around the edge of the table - or, if it does, that you''re comfortable with it.

 

[Round Halo Lover]

Date: 3/1/2010 3:30:30 PM
Author: FB.
As an example of cut grade....here are some proportions that were awarded IGI''s ''Excellent'' cut grade:

Table: 60.5%
Crown angle: 35.3'' (14%)
Depth: 61.9%
Pavilion angle: 41.7'' (44.5%)
Girdle: medium.
Polish & Symmetry: VG

Check out it''s HCA score here:
https://www.pricescope.com/cutadviser.asp

Thanks for your imput FB. Are these proportions that you posted within the ''Tolkowsky Ideal range?

 

[Round Halo Lover]

I didn''t notice anything last week but I was a bit overwhelmed with all the diamonds!!!! I will check this weekend, thanks again, I appreciate your imput!

 

[FB.]

Date: 3/1/2010 3:37:01 PM
Author: Round Halo Lover

Date: 3/1/2010 3:30:30 PM
Author: FB.
As an example of cut grade....here are some proportions that were awarded IGI's 'Excellent' cut grade:

Table: 60.5%
Crown angle: 35.3' (14%)
Depth: 61.9%
Pavilion angle: 41.7' (44.5%)
Girdle: medium.
Polish & Symmetry: VG

Check out it's HCA score here:
https://www.pricescope.com/cutadviser.asp

Thanks for your imput FB. Are these proportions that you posted within the 'Tolkowsky Ideal range?

Nope.
The proportions fall within IGI's highest cut grades, but actually produce a rather poor performing diamond.
Their criteria are very loosely applied.

A Tolkowsky would have the similar proportions as my profile picture.

Table: 56%
Crown angle: 34.5' (15.5%)
Depth: 61.5%
Pavilion angle: 40.8' (43%)
Girdle: medium.
Polish & Symmetry: EX

Look up both sets of proportions in the HCA that I linked to and you will see.
https://www.pricescope.com/cutadviser.asp
http://gemappraisers.com/oldcutgrade.asp

 

[Dreamer_D]

I am not sure how much time you have spent looking a 2.2ct diamonds, but I would really encourage you to take a step back and slow down. Make sure the price is appropriate, the specs are right, and the cert is good before you fall in love. All diamonds look pretty dang good in the store lighting, so make sure you do your due dilligence with this amount of money.

 

[kristie]

ITA with Dreamer.......do not get caught up in the romance of thinking you have the steal of the century.
ALL diamonds are priced the way they are for a reason......truly. Please do not get too caught up and learn the hard way. There is really no such thing as a "steal" with diamonds, they are priced as what they are worth.

 

[FB.]

IGI''s "Excellent" stone''s HCA result:

Light Return Good
Fire Poor
Scintillation Fair
Spread Very Good
Total Visual Performance 6 - Fair

Tolkowsky''s HCA result:

Light Return Excellent
Fire Excellent
Scintillation Excellent
Spread Very Good
Total Visual Performance 1.3 - Excellent


IGI''s stone grading via AGA''s system: Final Grade: 2A
Tolkowsky''s stone via AGA''s system: Final Grade: 1A

 

[Round Halo Lover]

Date: 3/1/2010 3:44:11 PM
Author: FB.

Date: 3/1/2010 3:37:01 PM
Author: Round Halo Lover

Date: 3/1/2010 3:30:30 PM
Author: FB.
As an example of cut grade....here are some proportions that were awarded IGI''s ''Excellent'' cut grade:

Table: 60.5%
Crown angle: 35.3'' (14%)
Depth: 61.9%
Pavilion angle: 41.7'' (44.5%)
Girdle: medium.
Polish & Symmetry: VG

Check out it''s HCA score here:
http://www.pricescope.com/cutadviser.asp

Thanks for your imput FB. Are these proportions that you posted within the ''Tolkowsky Ideal range?

Nope.
The proportions fall within IGI''s highest cut grades, but actually produce a rather poor performing diamond.
Their criteria are very loosely applied.

A Tolkowsky would have the similar proportions as my profile picture.

Table: 56%
Crown angle: 34.5'' (15.5%)
Depth: 61.5%
Pavilion angle: 40.8'' (43%)
Girdle: medium.
Polish & Symmetry: EX

Look up both sets of proportions in the HCA that I linked to and you will see.
http://www.pricescope.com/cutadviser.asp
http://gemappraisers.com/oldcutgrade.asp

Got ya now FB

Difference between scoring a 6 and a 1.3

So if the cert states that it has Tolkowsky proportions then they would have to be near the second set of proportions that you posted, right?

(will defo note them down once I see the cert and imput to the HCA)

How is IGI for colour and clarity grading compared to say GIA and, dare-i-say-it, EGL!?!

 

[Round Halo Lover]

Date: 3/1/2010 3:46:51 PM
Author: dreamer_dachsie
I am not sure how much time you have spent looking a 2.2ct diamonds, but I would really encourage you to take a step back and slow down. Make sure the price is appropriate, the specs are right, and the cert is good before you fall in love. All diamonds look pretty dang good in the store lighting, so make sure you do your due dilligence with this amount of money.

Thanks Dreamer, any chance we know each other?? beacuse you are spot on!!!1 I impulse-purchased a car once because I got so excited!!!! This is definitely something we are not going to rush, boyf is much more grounded than me

I know I have to slow down and get less excited. When a girl spents the whole day looking at diamonds, she gets fairly darn excited!!!!

 

[FB.]

Date: 3/1/2010 3:53:10 PM
Author: Round Halo Lover

Date: 3/1/2010 3:44:11 PM
Author: FB.

Date: 3/1/2010 3:37:01 PM
Author: Round Halo Lover

Date: 3/1/2010 3:30:30 PM
Author: FB.
As an example of cut grade....here are some proportions that were awarded IGI''s ''Excellent'' cut grade:

Table: 60.5%
Crown angle: 35.3'' (14%)
Depth: 61.9%
Pavilion angle: 41.7'' (44.5%)
Girdle: medium.
Polish & Symmetry: VG

Check out it''s HCA score here:
http://www.pricescope.com/cutadviser.asp

Thanks for your imput FB. Are these proportions that you posted within the ''Tolkowsky Ideal range?

Nope.
The proportions fall within IGI''s highest cut grades, but actually produce a rather poor performing diamond.
Their criteria are very loosely applied.

A Tolkowsky would have the similar proportions as my profile picture.

Table: 56%
Crown angle: 34.5'' (15.5%)
Depth: 61.5%
Pavilion angle: 40.8'' (43%)
Girdle: medium.
Polish & Symmetry: EX

Look up both sets of proportions in the HCA that I linked to and you will see.
http://www.pricescope.com/cutadviser.asp
http://gemappraisers.com/oldcutgrade.asp

Got ya now FB

Difference between scoring a 6 and a 1.3

So if the cert states that it has Tolkowsky proportions then they would have to be near the second set of proportions that you posted, right?

(will defo note them down once I see the cert and imput to the HCA)

How is IGI for colour and clarity grading compared to say GIA and, dare-i-say-it, EGL!?!

Sadly, no. Most lab certs are little more than a propaganda leaflet.
Each lab has it''s own "tolerances" that it will accept as a Tolkowsky. Many labs are very lenient and "loose" in their definition of cut quality and many are also rather loose in the way they apply their colour and clarity grading.

 

[Round Halo Lover]

OK thanks all, will leave ye know how I get on!!!

Gosh, I wish I knew as much as you folk do.....sigh, maybe someday.....