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»  » Diamond Prices and Grading »
 » RockyTalky
»  » Is this a nice 0.60ct diamond?
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Is this a nice 0.60ct diamond? |
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| P: 5/18/2005 12:18:14 PM | |
GFORCE100 Rough Rock Total Posts: 32 Last Post: 1/15/2006 Member Since: 5/17/2005 |
Hello all, Just want some opinions as to whether this is a nice diamond. To my knowledge it appears as such but obviously your thoughts will confirm it should this be the case. To my eyes it seems to have all the right properties in each respective catergory. Carat weight: 0.60 Cut: Ideal Color: F Clarity: VVS2 Depth %: 61.4% Table %: 55% Symmetry: Excellent Polish: Excellent Girdle: Thin to medium Culet: None Fluorescence: None Measurements: 5.44x5.48x3.35 mm Price: $2600 Many thanks to all, |
| Posted: 5/18/2005 12:18:14 PM | |
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There are 11 replies to this message. There are 11 replies on this page. |
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| P: 5/18/2005 12:27:57 PM | |
icekid Ideal Rock Total Posts: 6,555 Last Post: 11/22/2009 Member Since: 11/17/2004 |
you need to get a little more information from the vendor. can you get crown and pavilion angles? also, have you seen the diamond?
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| Posted: 5/18/2005 12:27:57 PM | |
| P: 5/18/2005 12:34:03 PM | |
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GFORCE100 Rough Rock Total Posts: 32 Last Post: 1/15/2006 Member Since: 5/17/2005 |
Hi thanks for your response. This is an online diamond so I have not seen it. Also as to extra info, the GIA certificate doesn't show any further info of such nature. Would the info you're asking for not be all found under the "Ideal cut" clasification? I.e. As it is an ideal cut then the angles must be of excellent values?? Thanks again.
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| Posted: 5/18/2005 12:34:03 PM | |
| P: 5/18/2005 2:50:39 PM | |
Mara Ideal Rock Total Posts: 27,919 Last Post: 11/23/2009 Member Since: 10/30/2002 |
'ideal cut' as a phrase standing alone means nothing. it does not mean that angles and other numbers are going to be excellent..it just is a phrase that is much overused so that people can sell stones at higher prices. it's up to you to find out if this is indeed an 'ideal cut' ....request a Sarin on that stone and see if there are any pictures of the stone, or an idealscope image to show light return. armed with those you can learn more about an online store, but i would not buy with just this scarce information you noted here. so far the specs look okay for a well-cut stone but you need more info. ________________________________ |
| Posted: 5/18/2005 2:50:39 PM | |
| P: 5/18/2005 3:21:58 PM | |
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GFORCE100 Rough Rock Total Posts: 32 Last Post: 1/15/2006 Member Since: 5/17/2005 |
Right but correct me if I'm wrong, can't we calculate crown/pavilion angles based on the above data? We have the diamond's size, and depth ratio so although I don't know the equation this very minute I'm guessing the angles can be developed from this? This in turn would state what a Sarin report would deliver and the latter is simply a visible confirmation of what the theory (i.e. diamond specifics) already detail? My logic is correct no? Thanks.
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| Posted: 5/18/2005 3:21:58 PM | |
| P: 5/18/2005 3:45:24 PM | |
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Mara Ideal Rock Total Posts: 27,919 Last Post: 11/23/2009 Member Since: 10/30/2002 |
Date: 5/18/2005 3:21:58 PM Author: GFORCE100 My logic is correct no? No.  This has been discussed in the past....you cannot calculate crown and pavilion angles from the data given on a GIA cert. You must request a Sarin. Good luck! ________________________________ |
| Posted: 5/18/2005 3:45:24 PM | |
| P: 5/18/2005 4:36:21 PM | |
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GFORCE100 Rough Rock Total Posts: 32 Last Post: 1/15/2006 Member Since: 5/17/2005 |
Right, good to know! Thank You. I guess generally speaking the more a diamond is within the ideal cut range (the %'s) the more chance it has of being a very capable stone (fire & brilliance factors).
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| Posted: 5/18/2005 4:36:21 PM | |
| P: 5/18/2005 8:15:14 PM | |
Maxine Ideal Rock Total Posts: 1,394 Last Post: 10/25/2009 Member Since: 12/6/2004 |
This probably IS a pretty one!!!!!! http://www.goodoldgold.com/0_65ct_f_vs2_h&a2.htm
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| Posted: 5/18/2005 8:15:14 PM | |
| P: 5/18/2005 8:52:51 PM | |
Kaleigh Ideal Rock Total Posts: 25,916 Last Post: 11/23/2009 Member Since: 11/18/2004 |
Oh Maxine that IS pretty!!!
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| Posted: 5/18/2005 8:52:51 PM | |
| P: 5/19/2005 12:55:43 AM | |
niceice Ideal Rock Total Posts: 1,792 Last Post: 7/22/2008 Member Since: 1/29/2003 |
Date: 5/18/2005 12:34:03 PM Author: GFORCE100 Hi thanks for your response. This is an online diamond so I have not seen it. Many online dealers provide such basic information as a Sarin or OGI computerized proportions analysis for the diamonds that they offer for sale... These machines are quite common in the major diamond centers so there really is no reason why a vendor can not obtain this information so that you may make an educated decision regarding this major purchase. Request a detailed copy of the proportions analysis that provides you with a facet-by-facet representation of the crown and pavilion facets so that you can determine whether the facet structure of the diamond flows properly or whether it does not... The present proportions system does not fully take this into account, but many of the more precise diamond buyers (trade level) do consider this to be important and do take it into account... The new ideal cut rating system developed by the AGS Laboratory that goes into effect June first certainly does... Todd L. Gray, President |
| Posted: 5/19/2005 12:55:43 AM | |
| P: 5/19/2005 4:43:22 AM | |
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GFORCE100 Rough Rock Total Posts: 32 Last Post: 1/15/2006 Member Since: 5/17/2005 |
Right thanks for the feedback. It might be that GIA revises it's certificate too as it seems AGS is trying to get the edge over GIA and win more reputation despite both labs being neck and neck (perhaps GIA has a 1-2% advantage but no more). Anyway.....it would be interesting to know how a jeweller knows the qualiy of the cut by just looking at the diamond's numbers. Sure depth and table % give us a good idea of what kind of cut the diamond is but is having the crown/pavilion angles the only way to extend this comphrension? I'm sure it's possible to just go "ah yes this is a wonderful diamond" or "ah this is a excellent diamond" even before one does the test to confirm so. I guess it's a "talent" but it must rest on some knowledge, i.e. key identifiers that inform us what grade diamond we're seeing.
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| Posted: 5/19/2005 4:43:22 AM | |
| P: 5/19/2005 6:16:55 AM | |
valeria101 Ideal Rock Total Posts: 14,048 Last Post: 4/30/2006 Member Since: 8/29/2003 |
Date: 5/19/2005 4:43:22 AM Author: GFORCE100 Anyway.....it would be interesting to know how a jeweller knows the qualiy of the cut by just looking at the diamond's numbers. Sure depth and table % give us a good idea of what kind of cut the diamond is but is having the crown/pavilion angles the only way to extend this comphrension? If they can, that could be based on their relationship with the supplier (if those guys usually provide nice stones... etc.) In theory, beauties and barkers may have exactly the same table & depth. There's one example for 60/60 here , but the reazoning works for any other table&depth combination. Some combinations may be doomed for sure (30/70 anyone ?) but none a safe bet. What's the use to you is, say, 30% of rounds 60/55 look nice ? It is just one stone you are after. So the second statement is not quite right... table & depth do not go a long way. The otehr way around works better: if crown and pavilion angles are known, than table and depth (which can still vary) add only little detail. GIA will add cut grading on their report. So... even by their word the numbers supplied at prezent do not amount to that. Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian] |
| Posted: 5/19/2005 6:16:55 AM | |
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