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Help PLEASE !! Is it Normal ?

heyhoo

Rough_Rock
Joined
May 27, 2019
Messages
8
I am sorry if this is an ignorant post, but this is my first and only diamond so I have nothing to compare it to ! And please pardon my english

I recently received my first diamond and it is beautiful, but I was curious about one thing. I certainly see the fires but the diamond looks dark in some light . Is That normal ? Or maybe my diamond's cut is not so good ?

FYI , this is my diamonds specification :

CARAT : 0.75
COLOR GRADE : F
CLARITY GRADE : VVS2
CUT GRADE , POLISH , SYMMETRY : EXCELLENT
DEPTH : 60.9
TABLE : 56
CROWN : 34.5
PAVILLION : 40.6
CROWN HEIGHT : 15.5%
PAVILION DEPTH : 42.5%
SYMMETRY : EXELLENT
MEASUREMENTS : 5.87 X 5.91 X 3.59
Gridle : Thin - medium ( faceted ) 3.0%
Fluorescence : NOne
Star Lenght : 50 %
Lower Gridle Facet Lenght : 75 %

BELOW i upload some images in some lights :

1. This is what happened when i closely point the diamond with camera phone led light , the diamond turn to dark .
1d94ab96-5f56-4536-ad14-9cca85aba991.JPG 92cfc0ab-ed2a-453e-a49f-e5b592afac77.JPG



2. this is when i take the picture with canon camera and turn on the flash light :

IMG_3186.jpg IMG_3184.JPG



3. under sunlight ( open air )
IMG_7406.jpg IMG_7408.jpg

4. And this is when in my room (normal lighting) , zoom as much as i can using my Iphone 8 9a592d1e-75c1-481f-9357-cacf166ac0cc.JPG 53d119b2-6f5a-41b0-958a-7c06d1d38db2.JPG
1e857c3a-4c1d-487b-a4f1-2f33c46b9777.JPG 6d95969f-9c44-4e7e-b000-02f3b3a148ac.JPG
 

whitewave

Ideal_Rock
Premium
Joined
Feb 29, 2012
Messages
8,235
It’s gorgeous!!! Yes, it’s supposed to do that, as it’s likely a super ideal cut. I think she short version is the brilliance is too much for our eyes and camera.

We have several threads to explain it. I don’t however know of which one to link at the moment, hopefully someone can post the links.

It’s science!
 

lovedogs

Ideal_Rock
Premium
Joined
Jul 31, 2014
Messages
9,365
It looks like a great stone! And yes, it's very normal for an ideal cut to do that.
 

Dancing Fire

Super_Ideal_Rock
Premium
Joined
Apr 3, 2004
Messages
30,365
I recently received my first diamond and it is beautiful, but I was curious about one thing. I certainly see the fires but the diamond looks dark in some light . Is That normal ? Or maybe my diamond's cut is not so good ?
yes, it is normal under certain lighting conditions. Your stone have beautiful proportions :appl: :love:
 

flyingpig

Ideal_Rock
Premium
Joined
Nov 7, 2015
Messages
2,010
1. This is what happened when i closely point the diamond with camera phone led light , the diamond turn to dark .
1d94ab96-5f56-4536-ad14-9cca85aba991.JPG 92cfc0ab-ed2a-453e-a49f-e5b592afac77.JPG
The diamond is behaving as expected from an ideal cut diamond.
To elaborate, while you may think the diamond is exposed to plenty of light (and this is somewhat true) and therefore it should appear bright, the LED light is coming from one direction from one very specific angle at 90 degree. An ideal cut diamond do not reflect light coming from 90 degree angle. Looking at the background, the room is not well lit either. The last set of photos (#4) shows how a ideal cut diamond performs in a well lit room with plenty of diffused light coming and reflected off the wall from all directions
The diamond is facing the back of your camera/phone and what appears dark in the photo is the reflection of the camera/phone. YOu will see a similar thing inside your car. The inside of car may appear bright and well lit, but the diamond will appear dark because it is most likely facing the ceiling.

When assessing a diamond, I always look behind me and see what the diamond is facing.
 
Last edited:

tigertales

Shiny_Rock
Joined
Nov 8, 2015
Messages
365
Hmmm, I don't know about that. While some darkness is expected, this is unusual for a non-fluorescent.
I'd have some fun, and get a little lack light off Amazon and check out what color it is.

I had a diamond that fluoresced an eerie vivid lime green. very rare.
 

flyingpig

Ideal_Rock
Premium
Joined
Nov 7, 2015
Messages
2,010
2. this is when i take the picture with canon camera and turn on the flash light :
IMG_3186.jpg IMG_3184.JPG
3. under sunlight ( open air )
IMG_7406.jpg IMG_7408.jpg
4. And this is when in my room (normal lighting) , zoom as much as i can using my Iphone 8 9a592d1e-75c1-481f-9357-cacf166ac0cc.JPG 53d119b2-6f5a-41b0-958a-7c06d1d38db2.JPG
1e857c3a-4c1d-487b-a4f1-2f33c46b9777.JPG 6d95969f-9c44-4e7e-b000-02f3b3a148ac.JPG
2. The flash light hitting the diamond from 75+ degree angle (but not straight on at 90 degree). Therefore, you are seeing the arrows lighting up and sizzling. The rest is dark probably because the room is not well lit.
3. The diamond appears blue because it is reflecting the blue sky. The darkness is in the middle is the reflection of your dark clothing, or whatever dark it is facing.
4. The white is the reflection of white diffused light off the wall. The black is the reflection of the camera/phone.
 

whitewave

Ideal_Rock
Premium
Joined
Feb 29, 2012
Messages
8,235
Hmmm, I don't know about that. While some darkness is expected, this is unusual for a non-fluorescent.
I'd have some fun, and get a little lack light off Amazon and check out what color it is.

I had a diamond that fluoresced an eerie vivid lime green. very rare.
It’s not unusual and is completely expected. Direct sunlight is actually not the best to view diamonds
 

heyhoo

Rough_Rock
Joined
May 27, 2019
Messages
8
Thank you for all the replies , now I'm no longer worried about my diamonds. I would be very happy if it's true that this diamond really has a nice cut , because honestly I do not understand at all about diamonds.
 

whitewave

Ideal_Rock
Premium
Joined
Feb 29, 2012
Messages
8,235
Thank you for all the replies , now I'm no longer worried about my diamonds. I would be very happy if it's true that this diamond really has a nice cut , because honestly I do not understand at all about diamonds.
It’s a beautiful ring and stone. Wear it in good health!
 

heyhoo

Rough_Rock
Joined
May 27, 2019
Messages
8
2. The flash light hitting the diamond from 75+ degree angle (but not straight on at 90 degree). Therefore, you are seeing the arrows lighting up and sizzling. The rest is dark probably because the room is not well lit.
3. The diamond appears blue because it is reflecting the blue sky. The darkness is in the middle is the reflection of your dark clothing, or whatever dark it is facing.
4. The white is the reflection of white diffused light off the wall. The black is the reflection of the camera/phone.
Thank you your explanation is very clear and I finally understood why my diamond changed like that.

@flyingpig, @whitewave , @lovedogs , @Dancing Fire
Can i ask one more question? Is it possible for this stone ( With the pavilion 40.6 crown 34.5) to be a super ideal cut or just a pair of 34.5 / 40.8 can be a super ideal cut ?
because I bought this diamond without accompanied by asset image / ideal scope.

From the picture #4 Is there any light leakage ? Recently i read if the diamond cut too shallow can make the diamond look dark. And this stone has a bigger face up size for 0.75 carat. It looks like 0.77 carat if i convert the mm size to carat weight. And the hca score only 0.7
 
Last edited:

flyingpig

Ideal_Rock
Premium
Joined
Nov 7, 2015
Messages
2,010
Here the other image
D44BBE2C-58B4-4EB0-8ACE-D276F8676D7C.jpeg
A 34.5/40.6 is less likely to leak light under the table than a 34.5/40.8 from what I have been. However, when the pavilion is 40.6 and unevenly cut, you may have obstruction issues, meaning excessive contrast or darkness.
Looking at the last photo, while I do not see obvious light leakage, there is darkness under the table. But, I think this is from your camera being too close to the diamond, casting too much shadow.

DIY IS/ASET. Try these
https://www.pricescope.com/community/threads/tips-diy-aset-is-light-performance-diamond-photography.227610/
https://www.pricescope.com/community/threads/dyi-aset-nerdy-stuff-ver-2-0.234343/
 
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