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Heart And Arrows - Gia Graded?


z3020419
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Hi,

 

Compared to most of the questions being asked in this forum - mine one seems like a small potato.

Recently I am looking for a stone for my engagement ring (I live in Syd), I have limited budget so I am looking at some small stones.

 

I went to a Diamond specialist shop and the seller offers me a stone with the following spec (GIA reported)

 

Shape and Cutting Style: Round Brilliant

Measurements 5.40 - 5.42 x 3.25 mm

 

Carat Weight: 0.57 carat (very small, yes)

Color Grade: F

Clarity Grade: VS1

Cut Grade: Excellent

Polish: Excellent

Symmetry: Excellent

Fluorescene: None

 

The seller told me that given the above spec, it is an IDEAL cut and so far I knew that GIA doesn't grade diamonds in IDEAL....

 

Also he mentioned that it is a H&A diamond, the GIA report did not mention it though...will GIA report tells whether a diamond is H&A? (I once saw a GIA report that it specifically mentioned a diamond as a H&A diamond - but I don't know whether that report is a fake or not?)

 

Please help!!?

 

Thanks alot,,

 

KS

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Hi,

 

Compared to most of the questions being asked in this forum - mine one seems like a small potato.

Recently I am looking for a stone for my engagement ring (I live in Syd), I have limited budget so I am looking at some small stones.

 

I went to a Diamond specialist shop and the seller offers me a stone with the following spec (GIA reported)

 

Shape and Cutting Style: Round Brilliant

Measurements 5.40 - 5.42 x 3.25 mm

 

Carat Weight: 0.57 carat (very small, yes)

Color Grade: F

Clarity Grade: VS1

Cut Grade: Excellent

Polish: Excellent

Symmetry: Excellent

Fluorescene: None

 

The seller told me that given the above spec, it is an IDEAL cut and so far I knew that GIA doesn't grade diamonds in IDEAL....

 

Also he mentioned that it is a H&A diamond, the GIA report did not mention it though...will GIA report tells whether a diamond is H&A? (I once saw a GIA report that it specifically mentioned a diamond as a H&A diamond - but I don't know whether that report is a fake or not?)

 

Please help!!?

 

Thanks alot,,

 

KS

 

 

GIA doesn't mention whether a stone is hearts and arrows or not. You may have seen one that was inscribed with it and it was notated in the lab report comment section.

 

The top cut grade for GIA is EX EX EX. The top cut grade for a stone graded by the AGS laboratories is Ideal, ideal , ideal.

 

You still might want to consider light performance analysis as well because not all ideal cut and hearts and arrows perform the same. For more info on the light performance you can go to :

 

www.gemex.com

www.isee2.com

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GIA doesn't mention whether a stone is hearts and arrows or not. You may have seen one that was inscribed with it and it was notated in the lab report comment section.

 

The top cut grade for GIA is EX EX EX. The top cut grade for a stone graded by the AGS laboratories is Ideal, ideal , ideal.

 

You still might want to consider light performance analysis as well because not all ideal cut and hearts and arrows perform the same. For more info on the light performance you can go to :

 

www.gemex.com

www.isee2.com

 

Thanks for your help Jan! What I saw on the GIA REPORT was that that is a line stating "H&A" at the bottom of the report - also I was shown that (on the stone) beside the laster inscription reigstry number, there is another laser inscription text "H&A"!!! Is that what GIA usually do to TAG a H&A cut diamond?

 

I knew that might have been discussed before, but for a GIA Ex, Ex, Ex Diamond - will that automatically "graded" as a H&A, even though there is NO "H&A" laser inscribed on the stone?

 

Thanks alot,

 

KS

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GIA doesn’t grade hearts and arrows. They are describing in the comments what is written on the girdle of the stone. Someone wrote H&A there and they’re reporting this fact. They could just have well written ‘love is forever’ and it would appear in this same place on the report.

 

Hearts an arrows symmetry is not mandatory on an ExExEx and, in fact, it’s not present on most. Similarly Excellent or ideal cut is not mandatory for stones that have the patterning.

 

Neil

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Actually, we like this kind of potato here.

 

As Jan said, it’s likely the GIA report you saw may have been noting that the inscription said "Hearts & Arrows," which means nothing. The manufacturer can have anything inscribed on the stone... Just because someone had "D-Flawless" inscribed doesn't make it so :)

 

You may know this, but I thought I’d expand on it for you… "Hearts & Arrows" is a nickname for optical symmetry that is precise enough for crisp kaleidoscopic patterns to appear in the pavilion and crown when the diamond is seen in a reflective viewer. This is not something judged (yet) by the major labs. They do give a grade for "symmetry," which is how uniform the facets and outer shape of the diamond are, but a diamond can have EX or Ideal symmetry without its internal reflections being aligned precisely enough to show a top level of hearts & arrows optical symmetry - if that is important to you.

 

There is no official definition for how precise the patterns must be to be called H&A. So anyone selling ‘H&A’ diamonds can apply their own internal standards, and the standards vary. Arrows require only two facet reflections to overlap so many diamonds will show them. It’s much more difficult to achieve precise hearts, as six reflections must overlap.

 

Over the years our machines, tools and measuring devices have improved. In today's market a percentage of well-cut diamonds, particularly near the center of AGS0 and GIA EX ranges, will show a 'near’ H&A level of optical symmetry as a by-product of good machining; what some cutters call a ‘happy accident.’ Some places go ahead sell these by-products as “H&A diamonds†- charging a premium - but don’t confuse them with the diamonds purposely taken to extremely high precision by their makers. Diamonds held to the uppermost levels of “H&A†craftsmanship are valued by a niche market of enthusiasts for the care, precision and consistency demonstrated in their cutting as much as any visible effects. I'm an example, and I loved the crispness of the patterning and sharp on-off edge to the contrast in H&A diamonds before I ever had a financial stake in this biz. Of course I’m also the kind of guy who will obsess on the most trivial settings on my stereo and TV - things I may be 'sensing' as much as hearing and seeing. There is also an appeal to things that are rarified. Just like some people like D color or IF/VVS clarity, H&A enthusiasts love cut precision.

 

If you are interested in H&A; or paying a premium for that precision - you should ask the seller to show you actual images, or view the diamond yourself in a hearts & arrows viewer. An on-purpose H&A diamond will have patterns that are very crisp, apparent and uniform.

 

Examples: All three diamonds below received the top lab grade in symmetry. The two on the left are both AGS Ideals. The one on the right is a GIA EX. A dealer could have “H&A†inscribed on any of them. The one on the left was obviously crafted with a top level of precision in mind. There are some who might consider the one in the center precise enough - although it was a “happy accident†and would fail by some standards - but the one on the right has nowhere near a top level of precision. Note that these are photos from a H&A symmetry viewer and not indicative of light performance (all three stones are good performers).

post-111809-1191530407_thumb.jpg

Edited by JohnQuixote
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GIA doesn't mention whether a stone is hearts and arrows or not. You may have seen one that was inscribed with it and it was notated in the lab report comment section.

 

The top cut grade for GIA is EX EX EX. The top cut grade for a stone graded by the AGS laboratories is Ideal, ideal , ideal.

 

You still might want to consider light performance analysis as well because not all ideal cut and hearts and arrows perform the same. For more info on the light performance you can go to :

 

www.gemex.com

www.isee2.com

 

Thanks for your help Jan! What I saw on the GIA REPORT was that that is a line stating "H&A" at the bottom of the report - also I was shown that (on the stone) beside the laster inscription reigstry number, there is another laser inscription text "H&A"!!! Is that what GIA usually do to TAG a H&A cut diamond?

 

I knew that might have been discussed before, but for a GIA Ex, Ex, Ex Diamond - will that automatically "graded" as a H&A, even though there is NO "H&A" laser inscribed on the stone?

 

Thanks alot,

 

KS

 

 

No that is what the dealer that submitted the stone to GIA had done but it's not a GIA grade. Anyone can get a stone laser inscribed with H&A but doesn't always mean that the stone is a actual hearts and arrows diamonds. I've seen a few with that inscription that I wouldn't call a hearts and arrows. It's only about $20 to get a stone inscribed.

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Ditto to John and Jan,

 

In a nutshell;

 

1. Any diamond can be laser inscribed with any message. The inscription itself cost a few dollars and is meaningless in and of itself.

 

2. A diamond either exhibits the crisp H&A pattern and thus qualifies as a true Hearts and Arrows diamond, or it does not.

 

Jewelers who arbitrarily apply and attribute varying "levels" of Hearts and Arrows to a diamond ("H&A 1,2,3," ..."almost H&A", "Maybe H&A", "Close to H&a" ...et. al.), do a tremendous disservice to consumers.

Edited by DiamondMaven
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