Is this a good buy?

[Laila619]

I was browsing for diamonds, and came across this:

1.70 GIA Ideal cut H SI 1 round brilliant
Table: 57%
Depth: 61.6%
Crown: 35.0
Pavilion: 40.6
7.64 x 7.66 x 4.71 mm (nice finger coverage!!

)

It scores a .9 on the HCA.

$11,000

Seems like a really nice diamond! And my DH said we might be able to swing it. Do the numbers look ok? It is not a H & A diamond.

 

[Lorelei]

Date: 9/3/2009 1:16:45 AM
Author:Laila619
I was browsing for diamonds, and came across this:

1.70 GIA Ideal cut H SI 1 round brilliant
Table: 57%
Depth: 61.6%
Crown: 35.0
Pavilion: 40.6
7.64 x 7.66 x 4.71 mm (nice finger coverage!!

)

It scores a .9 on the HCA.

$11,000

Seems like a really nice diamond! And my DH said we might be able to swing it. Do the numbers look ok? It is not a H & A diamond.

Hi Laila

It looks very promising, if you could also post the star and lower girdle facet percentages too please that would be good to know. These will be on the diamond diagram on the right hand side of the report where you got the angles etc.

Any chance of an Idealscope or ASET image too please?

 

[Laila619]

Hi Lorelei!

Hmm, it looks like 15% and 43%.

A 1.75 carat is supposed to be 7.8mm. Is this diamond measuring small for a 1.7 at only 7.64mm?

 

[stone-cold11]

Numbers looks good.

The numbers you give are the crown and pavilion height. The stars should be a number around 50-60% and the lower half 75-85%.

 

[Laila619]

Oh, thanks Stone-cold...

Here they are:

55%

75%

Good? Is it facing up a tad small?

 

[stone-cold11]

It is not small, just slightly smaller, 2% off ideal spread, not bad for a diamond. Ideally at 1.7c should be around 7.7mm.

 

[stone-cold11]

The star and lower girdle facet numbers look good to me then.

Good luck.

 

[Laila619]

Thank you for the help!

What about THIS:

1.71 G color SI1 GIA Excellent cut

Scores a 0.7 on the HCA
Polish/Symmetry: EX/EX

Table: 57%
Depth: 60.7%
Crown angle: 34
Pavilion angle: 40.6
50%
75%
Girdle: thin to slightly thick

Measurements: 7.70 x 7.73 x 4.68 mm

 

[stone-cold11]

No prob.

 

[Lorelei]

Date: 9/3/2009 8:44:47 AM
Author: Laila619
Oh, thanks Stone-cold...

Here they are:

55%

75%

Good? Is it facing up a tad small?

Its fine Laila, nothing to worry about.

 

[Lorelei]

Date: 9/3/2009 8:47:52 AM
Author: Laila619
Thank you for the help!

What about THIS:

1.71 G color SI1 GIA Excellent cut

Scores a 0.7 on the HCA

Table: 57%
Depth: 60.7%
50%
75%

Looks good but need the angles please for crown and pavilion, diameter and girdle too please, polish and symmetry. Check it is eyeclean also.

 

[Laila619]

Lorelei,

I edited the info above for the 1.71 G.

I am also open to anyone helping me find something! I am looking for a RB in the 1.65 - 2.0 carat range. H or better, SI1 or better.

The bigger the better. I can''t afford H & A but excellent/ideal cut is important.

 

[stone-cold11]

Looks good too. Need an IS image to confirm. Check eye-clean too.

 

[stone-cold11]

Budget?

 

[Laila619]

Date: 9/3/2009 9:05:37 AM
Author: Stone-cold11
Budget?

This is gonna be the tricky part Stone-cold! Ideally under $12,000, or as darn close to that as possible!

 

[stone-cold11]

This JA H&A 1.67c G SI1? Just under if you use PS discount and wire. As always, check eye-clean and ask for a hearts image for this stone if interested.

http://www.jamesallen.com/diamonds/G-SI1-Ideal-Cut-Round-Diamond-1238415.asp

 

[stone-cold11]

This is non-H&A, 1.8c H SI1. Numbers looks good, but image not that good, but maybe just the set up is bad for that stone, so ask for an IS image if you are interested. And check eye-clean.

http://www.jamesallen.com/diamonds/H-SI1-Ideal-Cut-Round-Diamond-1247914.asp

EDT:
Another, 1.71 H SI1, image looks good. Ask for IS and if eye-clean.

http://www.jamesallen.com/diamonds/H-SI1-Ideal-Cut-Round-Diamond-1067904.asp

 

[Lorelei]

Date: 9/3/2009 9:03:15 AM
Author: Laila619
Lorelei,

I edited the info above for the 1.71 G.

I am also open to anyone helping me find something! I am looking for a RB in the 1.65 - 2.0 carat range. H or better, SI1 or better.

The bigger the better. I can''t afford H & A but excellent/ideal cut is important.

Ok, that looks fine thank you! Can you get an Idealscope image for this one? If that checks out it could be a definite contender.

 

[Lorelei]

Date: 9/3/2009 9:08:12 AM
Author: Laila619

Date: 9/3/2009 9:05:37 AM
Author: Stone-cold11
Budget?

This is gonna be the tricky part Stone-cold! Ideally under $12,000, or as darn close to that as possible!

12k just for the diamond or does it need to include the setting Laila?

 

[Laila619]

Just for the diamond Lorelei...

Thank you for those options Stone-cold!

 

[Laila619]

With the 1.71 carat G that I found...it only has a depth of 60.7%. Will that mean the stone will be less firey than a deeper cut stone? Because shallower stones are less firey, but have better spread, correct?

 

[stone-cold11]

Date: 9/3/2009 9:48:42 AM
Author: Laila619
With the 1.71 carat G that I found...it only has a depth of 60.7%. Will that mean the stone will be less firey than a deeper cut stone? Because shallower stones are less firey, but have better spread, correct?

No, the crown depth and angles decide that not the overall depth.

 

[Lorelei]

Date: 9/3/2009 9:48:42 AM
Author: Laila619
With the 1.71 carat G that I found...it only has a depth of 60.7%. Will that mean the stone will be less firey than a deeper cut stone? Because shallower stones are less firey, but have better spread, correct?

Ok thanks! No, depth does not influence fire as such, this comes down more to the crown and pavilion angles, generally a steeper crown angle can assist fire as long as the pavilion angle isn't correspondingly steep. Some shallower crowned diamonds can show less fire and in some cases can have better spread, what you want to watch for are the ' shallow shallows' where both crown and pavilion angles are on the shallow side, this can lead to obstruction in some cases where a diamond can visibly darken at close inspection due to the viewer's head/ body blocking the light. Conversely, what we call fiery ideal cuts ( FIC) can show greater fire due to the proportion configuration however the tradeoff can be you can lose some spread as these often have increased depths.

 

[Laila619]

James Allen is sending me the Idealscope image for the 1.7 ct H. It was verified to be completely eye clean and "very beautiful."

 

[stone-cold11]

Post the IS?

 

[Lorelei]

Date: 9/3/2009 10:25:27 AM
Author: Laila619
James Allen is sending me the Idealscope image for the 1.7 ct H. It was verified to be completely eye clean and ''very beautiful.''

Sounds good!

 

[Laila619]

Ooh, ooh!!

I just found this beauty!

It''s a little out of budget, but here are the stats:

1.91 ct H SI1 GIA ideal cut

Table: 57%
Depth: 60.6%
Polish/Symmetry: EX/EX
Crown angle: 34.5
Pavilion angle: 40.8
55%
75%
8.03 x 8.07 x 4.88

The vendor is a drop shipper however. They said they cannot get me an Idealscope image.

They can get me a Sarin though.

What do you think? Thanks in advance!

 

[stone-cold11]

Numbers look good.

Do you want to try your luck?

Sarin depends on how good their machine is and if the scan data is a full scan data or just a average output.

 

[Laila619]

Hi Stone-cold,

Well, is it possible that a stone could have all the right numbers/angles and have a bad Idealscope image where it leaks light?? I guess that''s the million dollar question.

How dumb that they can''t get me an Idealscope. The sales associate said "consumers don''t really know how to interpret these anyway so we don''t provide them."

 

[stone-cold11]

Tell them you know how to interpret IS images that is why you ask of it so they should give it to you.

Given the angles are an average of 8 facets, and then round to 0.5degrees for the crown and 0.2 degrees for the pavilion angles, there is a possibility of that happening.

How good is the return policy? If good, get an independent appraiser to look at the stone first?