Diamond Query: Will This Diamond with a Steep 36.5-Degree Crown Angle Still Be Brilliant? 


| Anonymous Reader


Hi Sebastian,

I love your blog very much! I learn everything from your website! May I get your opinion on this diamond?

 

1.40-Carat Round Diamond

1.40-Carat Round Diamond

 

My concern is: This is not a super idea cut but HCA tool has a 2.4 rate. So I guess it’s not too bad? But it has a very steep crown angle – 36.5 degrees. Do you think the diamond will still be brilliant? Thanks!

 

Your Diamond Teacher |

 

Thank you for your inquiry. I am happy to help. And I am glad to hear that the information on my site is helpful!

The diamond from Blue Nile is a great selection. I am not concerned about the steeper crown angle. The diamond will have sparkle. I do want to point out, however, that it does have medium fluorescence.

This means that the diamond may glow blue under strong UV light. And there is the rare chance that the diamond may appear hazy/oily under strong UV light from the fluorescence.

 

 

| Anonymous Reader


Hi Sebastian,

Thanks for your quick reply! I just read your blog again. Crown angle of 36.6 degrees is outside of your “super ideal” and “excellent” range.

May I know why you think this diamond that has 36.5 degrees would still be okay and won’t affect the brilliance level? Thank you!

 

Your Diamond Teacher |

 

We can hyper-focus on the slightest deviations, however, practically speaking, the eye will not detect the difference. The faceting pattern of a round brilliant cut diamond is so busy that the eye cannot rest.

Keep in mind, a team of highly trained and experienced GIA Gemologists evaluated the diamond and determined that its proportions/angles qualify it for an excellent cut. And GIA does not recognize “super ideal”.

It has been studied and acknowledged by diamond enthusiasts that under extreme scrutiny, light imaging, and a specific mathematical formula that if a diamond has what is deemed as “super ideal” proportions, it should give off more light/sparkle. I hope this helps!

 

 

| Anonymous Reader


Hello Sebastian,

Got it! You are very helpful! Thanks for your detailed explanation! Have a great day!

 

 

Diamond Query: Will This Diamond with a Steep 36.5-Degree Crown Angle Still Be Brilliant? 
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About 

Sebastian Naturski loves to write about diamonds and share his knowledge with his readers.
When he is not working on his website he is studying law at Humboldt University of Berlin.
He has taken part in several international law competitions and likes to broaden his horizons.
His other big passion are languages. He is fluent in German, English, Polish and Japanese and got basic skills in French and Spanish as well.