shape
carat
color
clarity

# Diamond Color-Price Relationship

#### kelpie

##### Ideal_Rock
I found this online and thought you might think it's interesting too.

The following statistics provide an indication of the relationship between color grade and price:

D costs 50% more per carat than E
E is 12% more than F
F is 16% more than G
G is 22.5% more than H
H is 18% more than I
I is 22.5% more than J
J is 9% more than K
K is 10% more than L
L is 20% more than M

#### centralsquare

##### Ideal_Rock
Very interesting...where did you find this information? Seems pretty accurate.

#### kenny

##### Super_Ideal_Rock
Don't the numbers shift with carat weight too?

IOW, if those percentages apply when all the stones are 1 ct, different percentages may apply for 3 ct.

Here is a hypothetical example:
If a 1 ct D is 50% more than a 1 ct E, then a 3 ct D may be, say, 60% more than a 3 ct E. - something like that.

#### kelpie

##### Ideal_Rock
Yeah, it assumes all other factors are equal. I bet you would see a difference set of proportions in huge carat sizes.

#### kenny

##### Super_Ideal_Rock
D costs 50% more per carat than E
E is 12% more than F
F is 16% more than G
G is 22.5% more than H
H is 18% more than I
I is 22.5% more than J
J is 9% more than K
K is 10% more than L
L is 20% more than M

This list makes some color grades seem to be better value than others, and they are NOT in order.
For instance the best value is J followed by K then E . . . etc.
G and I are poor values.
The worst value is D especially considering what a good value E is.

I wonder why the percentages are not more linear.
Perhaps it relates to the non linear supply of what nature gives us.

#### kelpie

##### Ideal_Rock
It is an odd spread except for the jump to D, Of course. I wonder how much is a factor of supply vs a factor of demand. I can see why the drop at K as it has never been mass marketed like D-I and even J has only recently become more accepted (granted with most of the junk that was sold it was probably in actuality a much lower color). However E does seem like a good value, and I've noticed that in shopping online too.