Hi PS,
I am getting ready to pull the trigger on a diamond/setting at a local jeweller. I’ve done a lot of research but ultimately cannot decide between two stones. It’s a small jeweller that I chose for the setting and warranty, and also I’m in Canada so it is hard for them to get super-ideal cuts.
I would really appreciate some help in deciding between these two:
#1
Shape and Style: Round Brilliant
Measurements: 5.80 - 5.83 x 3.63 mm
Cut Grade: AGS Ideal 0
Color Grade: AGS 0.5 (E)
Clarity Grade: AGS 4 (VS2)
Carat Weight 0.752
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 55.2%
Crown Angle: 35.1
Crown Height: 15.8%
Girdle: Faceted, 1.4% to 3.7%
Pavilion Angle: 40.8
Pavilion Depth: 43.2%
Star Length: 50%
Lower Girdle Length: 76%
Total Depth: 62.3%
Culet: Pointed
HCA 1.8
#2
Shape and Style: Round Brilliant
Measurements: 5.90 - 5.92 x 3.72 mm
Cut Grade: AGS Ideal 0
Color Grade: AGS 1.5 (G)
Clarity Grade: AGS 5 (SI1)
Carat Weight 0.803
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 55.1%
Crown Angle: 35.4
Crown Height: 16.0%
Girdle: Faceted, 2.0% to 4.6%
Pavilion Angle: 40.8
Pavilion Depth: 43.1%
Star Length: 57%
Lower Girdle Length: 78%
Total Depth: 62.9%
Culet: Pointed
HCA 2.5
As you can see they’re both deeper and have a steeper crown angle than what is ideal, but the .803 carat is worse. I went to take a look in the store and compared them. Low and behold they were similarly “sparkly” in the store light and in natural light but my time out of the store was limited. I should also add that there is one barely visible inclusion in the .803 carat stone but it can be set close to a prong and I doubt it would be visible. It was fairly difficult for my inexperienced eyes to see a large difference in performance and so that is why I need your expert advice!
On one hand I would lean towards the larger stone since it’s bigger and I don’t see the practicality in paying for E colour vs G and VS2 vs SI1 when she won’t see the difference. On the other hand I am wary of buying a stone that has an HCA score a decent amount above 2.0, and that with years to look at the rock in multiple light settings the 0.752 could noticeably outperform the .803.
Also the 0.752 is $300 more than the 0.803.
So which would you choose? Would the naked eye be able to see a performance difference between these stones in better/different light? Any advice would be greatly appreciated. Thank you!


I am getting ready to pull the trigger on a diamond/setting at a local jeweller. I’ve done a lot of research but ultimately cannot decide between two stones. It’s a small jeweller that I chose for the setting and warranty, and also I’m in Canada so it is hard for them to get super-ideal cuts.
I would really appreciate some help in deciding between these two:
#1
Shape and Style: Round Brilliant
Measurements: 5.80 - 5.83 x 3.63 mm
Cut Grade: AGS Ideal 0
Color Grade: AGS 0.5 (E)
Clarity Grade: AGS 4 (VS2)
Carat Weight 0.752
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 55.2%
Crown Angle: 35.1
Crown Height: 15.8%
Girdle: Faceted, 1.4% to 3.7%
Pavilion Angle: 40.8
Pavilion Depth: 43.2%
Star Length: 50%
Lower Girdle Length: 76%
Total Depth: 62.3%
Culet: Pointed
HCA 1.8
#2
Shape and Style: Round Brilliant
Measurements: 5.90 - 5.92 x 3.72 mm
Cut Grade: AGS Ideal 0
Color Grade: AGS 1.5 (G)
Clarity Grade: AGS 5 (SI1)
Carat Weight 0.803
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 55.1%
Crown Angle: 35.4
Crown Height: 16.0%
Girdle: Faceted, 2.0% to 4.6%
Pavilion Angle: 40.8
Pavilion Depth: 43.1%
Star Length: 57%
Lower Girdle Length: 78%
Total Depth: 62.9%
Culet: Pointed
HCA 2.5
As you can see they’re both deeper and have a steeper crown angle than what is ideal, but the .803 carat is worse. I went to take a look in the store and compared them. Low and behold they were similarly “sparkly” in the store light and in natural light but my time out of the store was limited. I should also add that there is one barely visible inclusion in the .803 carat stone but it can be set close to a prong and I doubt it would be visible. It was fairly difficult for my inexperienced eyes to see a large difference in performance and so that is why I need your expert advice!
On one hand I would lean towards the larger stone since it’s bigger and I don’t see the practicality in paying for E colour vs G and VS2 vs SI1 when she won’t see the difference. On the other hand I am wary of buying a stone that has an HCA score a decent amount above 2.0, and that with years to look at the rock in multiple light settings the 0.752 could noticeably outperform the .803.
Also the 0.752 is $300 more than the 0.803.
So which would you choose? Would the naked eye be able to see a performance difference between these stones in better/different light? Any advice would be greatly appreciated. Thank you!

