The guide says
"The best cut diamonds will sit in the intersection between GIA Excellent and AGS Ideal."

Does it mean the green dot should be at the crossing point of red and blue line ?

I tried

Spec 1  Table 36  Crown angle 34.5  Pavillion angle 40.8  - Green dot in the middle of red and blue line area.
Spec 2 Table 36  Crown angle 34.5  Pavillion angle 40.6  - Green dot is at the crossing of red and blue line.
Which one is the ideal one ? Spec 2 ? 

it seems to me 40.6 pic looks clearer.
another spec which i can see green dot at the crossing of Blue and red line will be Table 56 Crown 36 Pavillion 40.6

i tried changing the table % it appears the position green dot remain just the shape of red and blue line changes. does the shape of the red and blue line matter ?

Basically 34.5 crown and 40.8 pavilion is closest to Tolkowsky ideal cut. So I will say Spec 1.

I don't know about the red and blue line, all I know is that the best scenario is to have the dot touching both red and blue lines, or within the boundary of both red and blue lines.

Then again, this does not mean other proportions are no good. It is just that if you can find something within that kind of range, you will have higher chance on landing a good diamond.

Other that relying on proportions, the actual diamond photo / video will be helpful in determining whether a diamond is good enough.

Oic  thanks both for your inputs

Can get opinion on this diamond ?



0.42c D VS2
Crown angle 35 pavillion 40.6 table 57%

https://www.gia.edu/report-check?reportno=7413922317
Second diamond

0.42 D VS2
Table 59% crown angle 34 pavillion angle 40.8



https://www.gia.edu/report-check?reportno=6432423816

Oic  thanks both for your inputs

Can get opinion on this diamond ?



0.42c D VS2
Crown angle 35 pavillion 40.6 table 57%

https://www.gia.edu/report-check?reportno=7413922317
Second diamond

0.42 D VS2
Table 59% crown angle 34 pavillion angle 40.8



https://www.gia.edu/report-check?reportno=6432423816

For diamond 1, if the inclusion on the diamond table is a dark inclusion, I will probably skip it.

Both diamonds have decent proportions.

If you like fire , 1st diamond. Inclusion on the table could be a concern but should not be visible to naked eye, coz that pic is 10x or 30x zoom. The contrast is good though. Check 360 video see if you can see it

if you like allround , 2nd diamond. I prefer 2nd diamond. For your carat size I think you can go down in color and get a bigger carat diamond . G is good enough. maybe can get 50 pointer.

if you buying from lavin, get their gemologist to recommend too.

For diamond 1, if the inclusion on the diamond table is a dark inclusion, I will probably skip it.

Both diamonds have decent proportions.

0.5 c all starts from 6k though even with G color.

I already asked them for diamond with proportion that I want crown angle 34-36 pavillion angle 40.6-40.8

Ya I noticed the inclusion on table , will not choose this for sure
Thanks for input
How about this from zcova? But seems there’s inclusions on table too

https://zcova.com/mined-diamond/selected-di...4?start=diamond

Table 59% 34.5 40.6 = more fire

Any particular  table I should aim for ?

Another diamond with ideal proportion

56% 34.5 40.8

https://www.gia.edu/report-check?reportno=6425817831

 trim.79B79EA0_FB9D_4021_861B_4DA4ECAB94BC.MOV ( 911.73k ) Number of downloads: 15

The inclusion for this diamond seems transparent enough. The main inclusion for this diamond will be "Cloud", therefore for this VS2 diamond, I will ask and see if it is cloudy/milky or not. If it is alright, this can be a good choice.
I am surprised that this diamond looks terrible in the video. Which seems strange to be honest, but I won't be getting this.

The inclusion for this diamond seems transparent enough. The main inclusion for this diamond will be "Cloud", therefore for this VS2 diamond, I will ask and see if it is cloudy/milky or not. If it is alright, this can be a good choice.
I am surprised that this diamond looks terrible in the video. Which seems strange to be honest, but I won't be getting this.

How about this ? Seems quite a steal for this price for VS1 but their 360 shot is so far … can’t see a thing

https://www.gia.edu/report-check?reportno=6411130889

https://www.lavinnewyork.com/pages/DiamondD...a4700163e0001bb
Wanna ask for this diamond, is there concern on the inclusion that I marked ? Seems like a water trapped there.


https://www.lavinnewyork.com/pages/DiamondD...ac300163e0001bb
Struggling to find diamond given I have short timeline ! Seems only lavin has ready stock to do temporary setting.
If I go go zcova, it will take 1 mth .. hence it will be loaner path . Still comtemplating

For the cloud inclusion, Which one is acceptable ? Cloudy or milky ? Either way we need look for transparent cloud ?

Their 360 shot.. lol. Then again, the diamond is with them, you can actually just pay them a visit and see the actual diamond. Both of them.

For the D colour diamond, the inclusion is at one corner, so it won't be that obvious, unless you know where to find it.

When do you need it, and what's your budget?

What do u call that kind of inclusion for The D diamond ?feather or crystal?

I need it by 10th April, my idea is get diamond first, use temporary setting and  let her choose setting after proposal

Should be Crystal. Feather is just crack, usually won't be so obvious. If your location is PJ or KL, I can try to help you find options if you want, but I can only offer spring setting, which is not that nice looking. I am not sure what setting others offer you though.

How about this ? Seems quite a steal for this price for VS1 but their 360 shot is so far … can’t see a thing

https://www.gia.edu/report-check?reportno=6411130889

https://www.lavinnewyork.com/pages/DiamondD...a4700163e0001bb
Wanna ask for this diamond, is there concern on the inclusion that I marked ? Seems like a water trapped there.


https://www.lavinnewyork.com/pages/DiamondD...ac300163e0001bb
Struggling to find diamond given I have short timeline ! Seems only lavin has ready stock to do temporary setting.
If I go go zcova, it will take 1 mth .. hence it will be loaner path . Still comtemplating

oic , my worry is if i dont get diamond from either zcova or lavin, tthey dont do setting for it.

oic , my worry is if i dont get diamond from either zcova or lavin, tthey dont do setting for it.