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Need Help With Diamond Purchase

yelloe1213

Rough_Rock
Joined
Nov 12, 2016
Messages
1
Hi everyone,

I'm new to the forum and found it quite useful. I am about to purchase a 1.56 Carat G color VS1 diamond this coming Monday and I recently discovered the HCA tool. Now I'm a little worried as the proportions came back with a 3.3 HCA Score. Should I pass on the diamond?

PROPORTIONS

Depth 62.2 %
Table 55 %
Crown Angle 34.5°
Crown Height 15.5%
Pavilion Angle 41.2°
Pavilion Depth 43.5%
Star Length 55%
Lower Half 80%
Girdle Thin to Medium, Faceted, 3.0%
Culet None

I've attached the GIA Certificate in case it will help with any other considerations.

Thanks for all your help. It's costing me $13,800 out the door.
 

Attachments

ac117

Ideal_Rock
Premium
Joined
Apr 28, 2014
Messages
3,696
Yes, you should definitely pass. The pavilion angle is too high at 41.2 and also doesn't compliment the 34.5 crown angle. Round diamonds are a dime a dozen so don't settle. Stick to GIA triple excellent/AGS 000 stones and use these parameters for ideal cuts and weed out stones that score over 2.
Table: 54-58
Depth: 60-62.3
Crown angle: 34-35 (sometimes 35.5 if pavilion angle is 40.6)
Pavilion angle: 40.6-40.9 (sometimes 41 if crown angle is close to 34)

What's your budget and what are your desired specs?

For example:
https://www.jamesallen.com/loose-diamonds/round-cut/1.50-carat-g-color-vs2-clarity-excellent-cut-sku-2168439
https://www.jamesallen.com/loose-diamonds/round-cut/1.61-carat-h-color-vs2-clarity-ideal-cut-sku-2100125
http://www.goodoldgold.com/diamond-search/1.70-platinum_select_round--GIA-H-SI1-diamond-stock-15147-cert-
Super ideal cuts:
http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-3755010.htm
http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-3753627.htm
 

AprilBaby

Super_Ideal_Rock
Premium
Joined
Jul 17, 2008
Messages
10,632
Pass!
 
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