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Have I made the wrong choice in Diamond

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happy21

Rough_Rock
Joined
May 13, 2013
Messages
6
I just purchased a diamond two weeks ago and is in the process of being set. In the meantime I hopped onto a HCA calculator to
See what grade my diamond would be. It returned results as good I purchased a GIA certified 1.51 EVs2 brilliant round with triple excellent cut, polish & symmetry. Does this mean the certificate is not accurate? I had someone from GIA look at my report and they advised that it would be a gorgeous diamond. I'm confused and concerned can someone shed some light!
Thank you :roll:
 
Can you post all the angles in the GIA report? We'll need more info to find out why it didn't score well in the HCA. How much did you pay?

Considering its a GIA Excellent cut stone, it's already better than the majority of diamonds being sold today. It's possible for a GIA-Ex stone to get a poor HCA score, for example if the stone is too deep for HCA's liking but still falls under GIA-Ex ranges. It doesn't mean that it was mis-graded, it highlights that GIA uses different parameters for determining cut grade.

Have you seen the diamond in person? An important thing to remember is don't buy the paper, buy the stone. Trust your eyes, if it looks good, then great!
 
Are you within any return windows and do you love the diamond you bought?

If you can't return it and you love it, just forget about the HCA and don't think too much about it. A GIA 3X diamond is not a dud and I am sure it is a very nice diamond.
 
HCA and GIA places emphasis on different metrics to judge a diamond's beauty.
 
Hi thank you for your replied. Yes I have seen the diamond I went to see it twice as I was deciding on two at the the time
I went for the better graded and also nicer stone in general although they did look
Very similar when looking at them continuously my eyes were going a little funny lol.
The gentleman I am purchasing from is extremely confidant I made the right choice. He also did state that
If I wasn't happy he was more than happy to change it for me as I had shopped around and did my homework. Except I had no idea about
This HCA! Anyhow I paid over $17,000 for it. I'm very scared I've made the wrong choice. I originally wanted a VS1 but the price skyrocketed.
 
Hi again I have just spoken again with my jeweller and asked about the HCA he advised that this calculator is not conclusive and assures me that my stone is definitely a sparkler. He may end up telling me to go elsewhere lol!!! :lol:
 
He's right that it's not conclusive. It's a rejection tool that is designed to screen out obviously poor performers. It also has or used to have a bias against the overly-deep diamonds, partly because they face up small for their weight, and thus are not considered good values. (Why buy a diamond 1ct wt and pay the 1ct price if it only faces up like a .8ct, for example.)

The people here on PS are usually trying to optimize all of face-up size, light performance, and value for the money paid.
 
happy21 I am sure it is gorgous. But also remember and I am sure he is a reputable jeweler that he is selling you the diamonds so of course he will defend it.

Can we see the GIA certification and photos of the ring and stone as soon as you get it. I believe it has said here before a picture shows better than paper and asset photo would be even better.
 
We can't shed any light unless you give us the measurements of the diamond. You didn't even tell us the HCA score.
 
Hi here are the specs

ROUND BRILLIANT

Measurements 7.30 - 7.35 x 4.58 mm
Carat Weight 1.51 carat
Color Grade E
Clarity Grade VS2
Cut Grade Excellent
PROPORTIONS

Depth 62.6 %
Table 57 %
Crown Angle 35.5°
Crown Height 15.5%
Pavilion Angle 41.0°
Pavilion Depth 43.5%
Star Length 50%
Lower Half 80%
Girdle Medium to Slightly Thick, Faceted, 3.5%
Culet None
FINISH

Polish Excellent
Symmetry Excellent
FLUORESCENCE

Fluorescence Faint
Hope this gives an idea I'm sure ill be happy but since using the HCA
I feel a little let down at the report it returned which everything came back good. I understood
That if the diamond was triple Ex then the result would have been similar if not the same. ;)
Let me know what you think!
 
hawk25|1368427247|3445844 said:
An important thing to remember is don't buy the paper, buy the stone. Trust your eyes, if it looks good, then great!
Click to expand...

The paper tells you about the stone.
Ignoring the paper means a D IF and a H SI1 are equally desirable, since many people can't see the difference.

"Trust your eyes, if it looks good great".
Horrible advice again.

What if a person is totally ignorant of cut and is impressed with poorly-cut diamonds at the maul that they see under those deceptive jewelry store lights that can make a lump of coal sparkle?

What if, after taking your advice and buying the crappy stone that impressed their uneducated eyes, they get educated and compare it to a well-cut stone.
They will be disappointed they trusted their naive and uninformed eyes.
 
Hi thank you you are right in what you are saying.
12 years ago I bought my engagement ring with no certificates
I only went on what the jeweller told me. I saw the diamond and I loved it.
12 years later we have so much information at our feet that
It takes away the enjoyment of purchasing anything without double or triple checking
although still keeping in mind you don't want to be ripped off somewhat.
As soon as I receive my rings I will post a photo to show everyone the end result.(if I can work out how to)
Thank you all again for your input.
 
kenny|1368497054|3446403 said:
The paper tells you about the stone.
Ignoring the paper means a D IF and a H SI1 are equally desirable, since many people can't see the difference.

"Trust your eyes, if it looks good great".
Horrible advice again.

What if a person is totally ignorant of cut and is impressed with poorly-cut diamonds at the maul that they see under those deceptive jewelry store lights that can make a lump of coal sparkle?

What if, after taking your advice and buying the crappy stone that impressed their uneducated eyes, they get educated and compare it to a well-cut stone.
They will be disappointed they trusted their naive and uninformed eyes.
Click to expand...

I understand your point kenny, I shouldn't have said it so bluntly.

I didn't mean to say to ignore all the papers altogether, because of course you need to know about the stone, and what lab graded it. I assumed that the OP he did his homework (or maybe his jeweler gave good advice) because he already bought a GIA Ex stone, probably eye-clean VS2 and high E color (perhaps a little too high for some, but desirable for others). I also assumed that if he saw the stone already, he probably saw multiple stones while at the jewelers, and chose the one he liked best. This second assumption was probably made too hastily, to my fault.

My intention was to say that just because it doesn't score well on the HCA, it doesn't mean that it's a horrible stone. If you lined up a few GIA-Ex stones, some may like the stones that only scored 'good' on HCA, for whatever personality the stone's angles give. I've read threads where people try to 'buy the paper', getting obsessively high color/clarity just because it looks good on paper. In any case, I definitely should have worded it differently.

OP I hope this hasn't taken all the enjoyment of buying the stone. It's still an exciting time!
 
Can u explain this in simple terms?
 
double post
 
I thought that was simple enough. You have what PS calls a steep/deep, although it's not extreme. Steep crown angle plus deep pavilion, stone cut to retain weight. The are comments in that thread that indicate that some of those might be very nice looking, and some not. We already told you to get an ASET scope pic, didn't we? That shows the light performance, leakage, and some other aspects of the cutting techniques used.

Crown angle and pavilion angle are inversely related. Increase one and you must decrease the other.
 
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