Crown too shallow? Specific diamond discussion.

[tune0815]

Dear folks,

I just found a diamond which - based on the 360° video - and specs appears very good to me. Especially since price is quiet attractive. I have already reserved this stone; when I just found out that the "crown angle" is a bit "shallow".

The stats are as follows:

UND BRILLIANT

Measurements	5.90 - 5.92 x 3.61 mm
Carat Weight	0.77 carat
Color Grade	J
Clarity Grade	VVS1
Cut Grade	Excellent

PROPORTIONS

Depth	61.1 %
Table	55 %
Crown Angle	33.0°
Crown Height	14.5%
Pavilion Angle	40.8°
Pavilion Depth	43.0%
Star Length	50%
Lower Half	80%
Girdle	Medium to Slightly Thick, Faceted, 3.5%
Culet	None

0,77-Carat Round Cut Diamond | Blue Nile

www.bluenile.com

(no Idealscope).

One question: Should I ditch the stone solely because of the "shallow" crown angle, or are the proportions good enough. What do you think of the stone?

Thank you very much guys !!

 

[Eeveepenny]

Dear folks,

I just found a diamond which - based on the 360° video - and specs appears very good to me. Especially since price is quiet attractive. I have already reserved this stone; when I just found out that the "crown angle" is a bit "shallow".

The stats are as follows:

UND BRILLIANT

Measurements	5.90 - 5.92 x 3.61 mm
Carat Weight	0.77 carat
Color Grade	J
Clarity Grade	VVS1
Cut Grade	Excellent

PROPORTIONS

Depth	61.1 %
Table	55 %
Crown Angle	33.0°
Crown Height	14.5%
Pavilion Angle	40.8°
Pavilion Depth	43.0%
Star Length	50%
Lower Half	80%
Girdle	Medium to Slightly Thick, Faceted, 3.5%
Culet	None

0,77-Carat Round Cut Diamond | Blue Nile

www.bluenile.com

(no Idealscope).

One question: Should I ditch the stone solely because of the "shallow" crown angle, or are the proportions good enough. What do you think of the stone?

Thank you very much guys !!

Do you know what the HCA score is?

 

[tune0815]

thank u! yes it was below 1, probably 0.8 I remember. But as I read here this is not a selection tool.

 

[tune0815]

HCA was 0.6.

 

[Karl_K]

33 and 55 table has the same crown height as a 57table and just under 35ca. So ca is ok, its steep enough for good scintillation.
So in other words it is a little different but it works.

 

[flyingpig]

While 34-35 is recommended for CA, I personally allow 33-36.5, depending on PA and TB.

 

[jasper]

Suppose you have a 40 ¾° pavillion angle, 32 ¾° crown angle, 55 ½ % table, and a 2 % girdle (measured at the thin parts). That combination corresponds to your total depth percentage, and is within rounding error of your report's measurements. The crown angle and table ratio are well matched to that pavillion angle and girdle thickness:

Summary of: Diamond Design -- by Marcel Tolkowsky. Edited by Jasper Paulsen.

Diamond Design, by Marcel Tolkowsky, defines the ideal cut diamond.

www.folds.net

 

[stonehunter20]

you cant look at crown angel alone but have to look at BOTH crown angel and pavilion angel at least.

 

[Garry H (Cut Nut)]

If you are short sighted it can look a little dark on very close inspection.
And low colour hi clarity is not what I would choose, but you da boss!

 

[The Heart of the Ocean]

Dear folks,

I just found a diamond which - based on the 360° video - and specs appears very good to me. Especially since price is quiet attractive. I have already reserved this stone; when I just found out that the "crown angle" is a bit "shallow".

The stats are as follows:

UND BRILLIANT

Measurements	5.90 - 5.92 x 3.61 mm
Carat Weight	0.77 carat
Color Grade	J
Clarity Grade	VVS1
Cut Grade	Excellent

PROPORTIONS

Depth	61.1 %
Table	55 %
Crown Angle	33.0°
Crown Height	14.5%
Pavilion Angle	40.8°
Pavilion Depth	43.0%
Star Length	50%
Lower Half	80%
Girdle	Medium to Slightly Thick, Faceted, 3.5%
Culet	None

0,77-Carat Round Cut Diamond | Blue Nile

www.bluenile.com

(no Idealscope).

One question: Should I ditch the stone solely because of the "shallow" crown angle, or are the proportions good enough. What do you think of the stone?

Thank you very much guys !!

The dimensions sound nic, but I’m not an expert. Is there a return policy? I’m a firm believer in seeing it in person. I’d have a really hard time buying a diamond online without seeing it in person if I couldn’t return it. Good luck. Keep us informed on your decision