Please help me with this diamond

[25carat]

Hi,

Tempted to purchase the diamond below,please share your thoughts and please advice

Round briliant 1.14ct
6.79-6.86x4.08mm
G colour
SI1
Excellent cut
Excellent polish
Excellent sym
Flu none
Depth 59.8%
Table 57%
Crown angle 34
pavilion angle 40.6
girdle thin to medium ,faceted 2.5%
culet none
GIA cert
Cloud not shown
HCA 0.5 TIC
price about 9100AUD(including gst)

I am also concerned about the clarity of the diamond not too sure whether it is eye clean,cert said there is natural,feather and crystal it is towards the left middle(sorry tried my best to describe and file is too big to attach).Will try to attach cert.Would like a really sparkling diamond.Please help me to decide.

 

[Lorelei]

Welcome!

Initially an Idealscope or ASET image would be very useful for this diamond if the vendor can supply them. It is bordering on the shallower end with the crown and pavilion angles - if this is an experienced vendor I would ask them to check to see if the diamond darkens visibly at close scrutiny due to an effect called obstruction - your head blocks the light going to the diamond and can make shallower proportioned diamonds look dark sometimes. However I am probably being a bit overcautious but it wouldn't hurt to check, the diamond could well be fine.

As to whether it is eyeclean, the best thing is to tell the seller your expectations and ask them to inspect the diamond for you if possible. For example if you don't want to see any inclusions visible from any angle at close scrutiny then make them aware of that so you are both on the same page. It is cut which will get you the sparkle you want so very important to concentrate on that aspect.

 

[25carat]

thanks for the help.Anymore advice from others?

 

[stone-cold11]

Agrees with everything Lorelei has said. Nothing more to add.

 

[jet2ks]

Most humbly agree with Lorelei and SC.

 

[25carat]

So from the info provided would you guys said that it is a sparkling and value for money diamond?

 

[jet2ks]

Date: 5/6/2009 9:23:17 PM
Author: 25carat
So from the info provided would you guys said that it is a sparkling and value for money diamond?

No, I am saying it has the possibility of being a good performing diamond, but would like more information in the form of ASET or IS images before passing final judgement on it. It is on the border of being a very nice stone or one with obstruction issues.

As far as value for the money, I have no clue what the conversion rate is, so am not going to even attempt to go there.

EDT: Also, only someone physically looking at the diamond will be able to determine eye-clean.

 

[25carat]

How do i know or see whether the diamond has obstruction? Any tips? and what else to watch out when I view the diamond? I have tried to ask for ASET and ideal scope hopefully they have one. I am dealing with diamond exchange

 

[jet2ks]

Date: 5/6/2009 8:57:33 AM
Author: Lorelei
Welcome!

Initially an Idealscope or ASET image would be very useful for this diamond if the vendor can supply them. It is bordering on the shallower end with the crown and pavilion angles - if this is an experienced vendor I would ask them to check to see if the diamond darkens visibly at close scrutiny due to an effect called obstruction - your head blocks the light going to the diamond and can make shallower proportioned diamonds look dark sometimes. However I am probably being a bit overcautious but it wouldn't hurt to check, the diamond could well be fine.

As to whether it is eyeclean, the best thing is to tell the seller your expectations and ask them to inspect the diamond for you if possible. For example if you don't want to see any inclusions visible from any angle at close scrutiny then make them aware of that so you are both on the same page. It is cut which will get you the sparkle you want so very important to concentrate on that aspect.

Lorelei summarizes about obstruction here in her post. Once again, it is something that can only be determined by someone actually viewing the diamond. It is explained a little more in this link.

http://diamonds.pricescope.com/ideal.asp

I am not familiar with diamond exchange to know what tools they have at their disposal.

 

[25carat]

Anyone else? Input please , I am a newbie with passion for the rocks

 

[25carat]

More input please

 

[25carat]

was told that they will provide the reports but it will at a later stage,is there anyway that i can made my decision before the report as I have a very tight time frame.

 

[Lorelei]

Check out this video, if you look to the lower right part of the page, you will see a video titled Head Obstruction by Garry Holloway. That could be helpful in showing you what to look for concerning any obstruction effects

http://diamondscope.pricescope.com/

 

[Lorelei]

Date: 5/9/2009 9:55:37 AM
Author: 25carat
was told that they will provide the reports but it will at a later stage,is there anyway that i can made my decision before the report as I have a very tight time frame.

As to the above, all you can really do is to make sure this vendor has a solid return policy if you proceed and order the diamond, you could take the diamond to an independant appraiser to give the diamond the once over. Like I said earlier I might be being a bit overcautious as the proportions of this diamond are leaning towards the shallower side, but we can't say for sure that obstruction will or won't be an issue - it might be fine but I don't want to mislead you. All we can do is go by the info given and tell you what might happen, we can't tell you if it will as we have no way of knowing.

Tool you can use below to find an appraiser in your area.

https://www.pricescope.com/appr_list.aspx

 

[25carat]

I am based in Sydney australia, any recomendation for appraisal? I am thinking to send the diamond for laser inscribed and verification are there as good as appraisal?

 

[25carat]

Below is an IS please kindly help me making a decision

 

[Lorelei]

Both good images.

 

[Lorelei]

Date: 5/10/2009 10:13:14 AM
Author: 25carat
I am based in Sydney australia, any recomendation for appraisal? I am thinking to send the diamond for laser inscribed and verification are there as good as appraisal?

An appraisal is a detailed process where every part of the diamond is carefully inspected, you can certainly have the diamond laser inscribed and matched to the report at the same time, but whether they do a detailed appraisal or have the qualifications and skill to do so, you would need to find out.

 

[25carat]

okay, I went and viewed the diamond, it looks beautiful at different lighting, does not seem to have obstruction, but have a small tiny black crystal which can be easily seen under 10x.I spoted it without 10 x but have to look really hard and this is unset. Took me about 1-2min to spot it, is this still consider as eye clean? At a close range of about 9cm or less I spoted the tiny black mark, I have a perfect vision.

 

[stone-cold11]

One question, how is the IS/ASET image simulated? From a detailed sarin scan of the stone? If so, they look good.

 

[25carat]

I wish i could answer you question

 

[Lorelei]

Date: 5/13/2009 6:47:35 AM
Author: 25carat
okay, I went and viewed the diamond, it looks beautiful at different lighting, does not seem to have obstruction, but have a small tiny black crystal which can be easily seen under 10x.I spoted it without 10 x but have to look really hard and this is unset. Took me about 1-2min to spot it, is this still consider as eye clean? At a close range of about 9cm or less I spoted the tiny black mark, I have a perfect vision.

Eyeclean to you is whatever you want it to be. If that inclusion is acceptable to you then fine.

 

[stone-cold11]

Can you ask the vendor?

 

[Paul-Antwerp]

Date: 5/13/2009 6:50:27 AM
Author: Stone-cold11
One question, how is the IS/ASET image simulated? From a detailed sarin scan of the stone? If so, they look good.

Extremely good question, stone-cold.

It seems that the vendor just entered the averages into Diamcalc and generated the images as such. If so, both pics are not representative of the diamond.

Simply asking if the vendor got it based from the Sarin-file will not do, since some output of Sarin will also be averages only. If the vendor confirms that it comes from a detailed Sarin, the next question is that he gives the table with all 8 main pavilion, all 8 main crown angles and the other measurements in that table. I think that Sarin calls it the ''production-report''.

Live long,

 

[diagem]

Date: 5/13/2009 9:52:19 AM
Author: Paul-Antwerp

Date: 5/13/2009 6:50:27 AM
Author: Stone-cold11
One question, how is the IS/ASET image simulated? From a detailed sarin scan of the stone? If so, they look good.

Extremely good question, stone-cold.

It seems that the vendor just entered the averages into Diamcalc and generated the images as such. If so, both pics are not representative of the diamond.

Simply asking if the vendor got it based from the Sarin-file will not do, since some output of Sarin will also be averages only. If the vendor confirms that it comes from a detailed Sarin, the next question is that he gives the table with all 8 main pavilion, all 8 main crown angles and the other measurements in that table. I think that Sarin calls it the ''production-report''.

Live long,

If you have a Sarin srn file of the Diamond..., why would the vendor enter the averages only? Wouldnt it be easier to just open DC with the actual file?