carbonquest
Rough_Rock
- Joined
- Nov 4, 2016
- Messages
- 26
Hi, Please help me with these two stones. I got a 1.00 carat stone in the jewelers but I think I got ripped off, they said they only deal with GIA vg but when I got the stone I was unimpressed, and the stone fell out the ring setting! The company took the stone back with great reluctancy ,and I decided to purchase my own stone from qualitydiamonds. I'd wish I'd gone to whiteflash or jamesallen now, to get a superideal cut.
Old stone (1.00 carat):
Masurement 6.42 - 6.45 x 3.82 mm
Carat 1
Colour D
Clarity VS2
Cut Good [GIA]
Polish Very Good
Symmetry Fair
Girdle STK-VTK 5%
Depth 59.3%
Table 65.0%
Crown Angle 33.0%
Crown Height 11.5%
Pavillion Angle 40.6%
Pavillion Depth 43.0%
Star Length 55.0%
Lower Half 75.0%
Cutlet None
HCA 3.2%
HCA light Very Good
HCA Fire Very Good
HCA Scintillation Good
HCA Spread Excellent
Comments: Tilt shows fish-eye
NEW Stone (1.19 carat):
Masurement 6.88 - 6.91 x 4.10 mm
Carat 1.19
Colour D
Clarity VS2
Cut Excellent [GIA]
Polish Excellent
Symmetry Excellent
Girdle M-STK 3%
Depth 59.5%
Table 59.0%
Crown Angle 33.5 degrees
Crown Height 13.5%
Pavillion Angle 40.8 degrees
Pavillion Depth 43.0%
Star Length 45.0%
Lower Half 80.0%
Cutlet None
HCA 1.2%
HCA light Excellent
HCA Fire Excellent
HCA Scintillation Excellent
HCA Spread Excellent
Comments: N/A
I know that HCA is only a tool for weeding out >2 scores. But because this is a Triple Ex. GIA with a HCA of 1.2, does that mean that it's within ideal range? Is there any chance of the new stone being H&A. Or will it fare close to an H&A diamond.
I'm worried that the Crown Angle of 33.5 is too shallow, and the table of 59% is too high (I've read that around 57% is ideal). It sure does beat the old stones Table of 65%. I'm also worried about 45% as the new Star Length. Is that too small? Will it affect the amount of light shining in the diamond.
I hope the stone will look much bigger. Even though it is 19% bigger, the surface area shows it will only look 15% bigger. Please help me compare the stones and let me know if the newer rock was a wise choice! And, what would be any significant disadvantages of the new stone. I really want a H&A level super ideal cut now, and I'm worried that the choice I've made is not going to be as bright. I'm not sure whether GIA triple excellent vs Super Ideal Cut (e.g. Hearts and Arrows) can be visually distinguished when placed side by side by an average person under normal lighting conditions.
Thank you for your help.
PS. Both Diamonds have a fluorescence of None.
Will the new Diamond have a significantly greater Fire, Scintillation and Brightness?
Old stone (1.00 carat):
Masurement 6.42 - 6.45 x 3.82 mm
Carat 1
Colour D
Clarity VS2
Cut Good [GIA]
Polish Very Good
Symmetry Fair
Girdle STK-VTK 5%
Depth 59.3%
Table 65.0%
Crown Angle 33.0%
Crown Height 11.5%
Pavillion Angle 40.6%
Pavillion Depth 43.0%
Star Length 55.0%
Lower Half 75.0%
Cutlet None
HCA 3.2%
HCA light Very Good
HCA Fire Very Good
HCA Scintillation Good
HCA Spread Excellent
Comments: Tilt shows fish-eye
NEW Stone (1.19 carat):
Masurement 6.88 - 6.91 x 4.10 mm
Carat 1.19
Colour D
Clarity VS2
Cut Excellent [GIA]
Polish Excellent
Symmetry Excellent
Girdle M-STK 3%
Depth 59.5%
Table 59.0%
Crown Angle 33.5 degrees
Crown Height 13.5%
Pavillion Angle 40.8 degrees
Pavillion Depth 43.0%
Star Length 45.0%
Lower Half 80.0%
Cutlet None
HCA 1.2%
HCA light Excellent
HCA Fire Excellent
HCA Scintillation Excellent
HCA Spread Excellent
Comments: N/A
I know that HCA is only a tool for weeding out >2 scores. But because this is a Triple Ex. GIA with a HCA of 1.2, does that mean that it's within ideal range? Is there any chance of the new stone being H&A. Or will it fare close to an H&A diamond.
I'm worried that the Crown Angle of 33.5 is too shallow, and the table of 59% is too high (I've read that around 57% is ideal). It sure does beat the old stones Table of 65%. I'm also worried about 45% as the new Star Length. Is that too small? Will it affect the amount of light shining in the diamond.
I hope the stone will look much bigger. Even though it is 19% bigger, the surface area shows it will only look 15% bigger. Please help me compare the stones and let me know if the newer rock was a wise choice! And, what would be any significant disadvantages of the new stone. I really want a H&A level super ideal cut now, and I'm worried that the choice I've made is not going to be as bright. I'm not sure whether GIA triple excellent vs Super Ideal Cut (e.g. Hearts and Arrows) can be visually distinguished when placed side by side by an average person under normal lighting conditions.
Thank you for your help.
PS. Both Diamonds have a fluorescence of None.
Will the new Diamond have a significantly greater Fire, Scintillation and Brightness?