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Opinion of this stone?

aRnonymous

Rough_Rock
Trade
Joined
Nov 2, 2009
Messages
15
IGI

Shape and Cut: Round Brilliant
Carat Weight: 1.51 Carat
Color Grade: I
Clarity Grade: VVS1
Cut Grade: Very Good
Polish: Excellent
Symmetry: Very Good

Measurements: 7.13 x 7.18 x 4.59
Table Size: 55%
Crown Height - Angle: 17.5% - 37.5 degrees
Pavilion Depth - Angle: 42% - 40 degrees
Girdle Thickness: Slightly thick to thick (faceted)
Cutlet: Pointed
Total Depth: 64.1%
Fluorescence: Very Slight

---

Gets a HCA score of 1.1. My concern however is that it may be too deep?
 

flyingpig

Ideal_Rock
Premium
Joined
Nov 7, 2015
Messages
2,175
aRnonymous|1460081940|4016799 said:
IGI

Shape and Cut: Round Brilliant
Carat Weight: 1.51 Carat
Color Grade: I
Clarity Grade: VVS1
Cut Grade: Very Good
Polish: Excellent
Symmetry: Very Good

Measurements: 7.13 x 7.18 x 4.59
Table Size: 55%
Crown Height - Angle: 17.5% - 37.5 degrees
Pavilion Depth - Angle: 42% - 40 degrees
Girdle Thickness: Slightly thick to thick (faceted)
Cutlet: Pointed
Total Depth: 64.1%
Fluorescence: Very Slight

---

Gets a HCA score of 1.1. My concern however is that it may be too deep?
Many issues
1. Cut Grade: Only consider excellent cut. "very good" is not so very good
2. Yes, it is deep at 64.1
3. Pav angle is too shallow at 40. (40.6-40.9 is desirable)
4. Crown angle is too steep at 37.5 (34-35 is deisrable. maybe 33.5-35.5 in some cases, or even 36. never 37.5)

HCA score 1.1 because HCA cannot filter out diamonds with extreme angles: a good example of HCA's limitation.
 

Dancing Fire

Super_Ideal_Rock
Premium
Joined
Apr 3, 2004
Messages
31,549
aRnonymous|1460081940|4016799 said:
IGI

Gets a HCA score of 1.1. My concern however is that it may be too deep?
Yes, It is too deep, plus you should be concern about the IGI lab report too.
 

aRnonymous

Rough_Rock
Trade
Joined
Nov 2, 2009
Messages
15
flyingpig|1460097478|4016861 said:
aRnonymous|1460096996|4016860 said:
Thanks for the advice. Definitely very helpful. What are your thoughts on this one?
http://www.jamesallen.com/loose-diamonds/round-cut/1.26-carat-i-color-vs2-clarity-ideal-cut-sku-1006236
Stunning.
How do you go from IGI very good to GIA with super ideal proportions?? LOL

anyways.. I would not buy this one, because it is really yellow for I. It is almost J.
Haha, lots of reading and educating myself in a short amount of time! The help here is MUCH appreciated

What would you guys recommend in that case in the 1.25-1.55 ct range that is at most an I (or a very favorable J at a stretch) with excellent proportions, which is within the $8500 price range or so. Would prefer to be closer to the 1.5 mark if possible. Limited to JamesAllen as I have a credit there from turning in a previous diamond.
 

aRnonymous

Rough_Rock
Trade
Joined
Nov 2, 2009
Messages
15

Dancing Fire

Super_Ideal_Rock
Premium
Joined
Apr 3, 2004
Messages
31,549
aRnonymous|1460248016|4017426 said:
Looks good based on the #s, and if you are OK with the J color then go for it.
 
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