question about pricing per carat...

[Billmanweh]

other than benchmark weights (1.0, 1.5, 2.0, etc), over how wide of a scope are per carat prices generally relevant? that is, should the per carat price of a 1.1 ct diamond be approximately the same as a 1.2 ct diamond? 1.1 versus 1.3?

 

[JulieN]

average per carat cost of 7 WF ACA G VS2 1.0-1.1=7543
3 1.1-1.2=7541
5 1.2-1.3=8148

2 1.00-1.05=7534 1
5 1.05-1.10=7546 1.0016
2 1.10-1.15=7517 0.9977, outlier?
1 1.15-1.20=7587 1.0070
3 1.20-1.25=8105 1.0758 1
2 1.25-1.30=8211 1.0899 1.0311

Perhaps the sample size isn't enough, but from all the same company with pricing structure, should be fairly consistent.

 

[Billmanweh]

maybe it''s because I''ve been up all night, but what am I looking at there?

 

[JulieN]

Date: 6/10/2006 5:13:13 AM
Author: JulieN
All WF ACA, so same pricing structure should apply in the same company and brand.

#of stones in that range ct weight price/ct
7 1.0-1.1= 7543
3 1.1-1.2= 7541
5 1.2-1.3= 8148


2 1.00-1.05=7534 1 sets this range as the basis
5 1.05-1.10=7546 1.0016 indicates this range is priced 0.16% higher than basis
2 1.10-1.15=7517 0.9977, outlier?
1 1.15-1.20=7587 1.0070 0.7% higher than basis
3 1.20-1.25=8105 1.0758 7.6%higher 1 second basis
2 1.25-1.30=8211 1.0899 8.0%higher 1.0311 3.1% higher than second basis

The data shows that stones from 1.00-1.15 are priced about the same
1.15-1.20 are priced .7% higher than a 1 ct
1.20-1.25 are priced 7.6% higher than a 1 ct
1.25-1.3 are priced 3.1% higher than 1.2-1.25

 

[fire&ice]

Which shows nicely the increases at the benchmarks..... Also, the larger one goes, the price jumps are higher b/c the rough is pricier. This is also true for higher color/clarity stones.

 

[zhuzhu]

JulieN, As a consumer, you really impressed me with all the knowledge in the field!

Could you also tell us how much decrease in price a .80-.99 ct stone may be compared to 1 ct (per ct price)?

Thank you!!!

 

[JulieN]

That was just some number crunching.

Check this out: https://www.pricescope.com/RepScope.asp

Just for the purposes of this thread, it wouldn''t have worked because there are no smaller intervals between 1-1.5 ct.