Find your diamond
Find your jewelry
shape
carat
color
clarity

Table size & the overall appearance of the diamond.

Status
Not open for further replies. Please create a new topic or request for this thread to be opened.

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
Let''s take a simple example.

A 1ct RB diamond well-cut with a 6.5mm diameter.
Let''s assume the table is 57%

6.5 mm of diameter = 132.7 sqmm
& the table is 75.6 sqmm

Now let''s take a well cut .85 ct with a 6.1 mm diameter
Let''s assume the table is 62%

6.0 mm of diameter = 116.9 sqmm
& the table is 72.5 sqmm or 96% the size of the 1ct'' table

So as you can see.... an 85 pointer can have a table that is almost if not bigger than the
table of a wellcut 1ct diamond.....if you can find such a diamond with good crown & pavilion
angles.....you got a kicker...!

Trichrome.
 

pricescope

Ideal_Rock
Joined
Dec 31, 1999
Messages
8,266
Trichrome,

I ran DiamCalc evaluation for diamonds with 56% and 62% tables (crown and pavilion angles are 34.5* and 40.75* correspondingly).

Diamond with 56% table has contrast = 0.99 (1.0 corresponds to theoretical Tolkowsky cut) while diamond with 62% table has contrast = 0.88.

Contrast affects human peception of brilliance.
 

trichrome

Shiny_Rock
Joined
Dec 9, 2002
Messages
397
Leonid,

I agree.. However, a larger table means also a bigger flash of white light...this also
affects brillancy of the stone... I guess it's a matter of taste.

Trichrome
 

pricescope

Ideal_Rock
Joined
Dec 31, 1999
Messages
8,266
----------------
I agree.. However, a larger table means also a bigger flash of white light...this also
affects brillancy of the stone... I guess it's a matter of taste.

Trichrome
----------------
Agreed
 
Status
Not open for further replies. Please create a new topic or request for this thread to be opened.
Be a part of the community It's free, join today!
    Our Favorite Jewels from the 2021 Golden Globes
    Our Favorite Jewels from the 2021 Golden Globes
    Paris Hilton is Engaged
    Paris Hilton is Engaged
    Diamonds and Jewelry - Recommended Reads, Part 2
    Diamonds and Jewelry - Recommended Reads, Part 2

Need Something Special?

Get a quote from multiple trusted and vetted jewelers.

Holloway Cut Advisor



Diamond Eye Candy

Click to view full-size image.
Top