Calling Garry Holloway & other Argyle experts

[Moh 10]

Garry, on your website there is a chart of Argyle pink diamonds which is different than GIA’s Colored Diamond Scale.

http://www.preciousmetals.com.au/coloured_gems.asp

Here is my question:
Is a diamond that GIA graded Natural, Fancy Deep, Purplish-Pink closer to 1PP or 2PP on that chart?

Also, assuming all other specs are identical, which is more expensive, rare, and desirable, vivid or deep?

Also, which is more expensive, rare, and desirable, purplish-pink or purple pink, and what difference does that "ISH" make?

 

[Moh 10]

Here is the table.

 

[Moh 10]

GIA''s Scale:

 

[Moh 10]

Bump.

I want to understand the order of pricing of GIA's colored grades.
I'm looking at vivid, deep and intense fancies, Purplish-pink.

With white diamonds (when all else is equal) a G will be priced higher than an H.
That is easy to understand.

I do know that (when all else is equal) a fancy vivid is worth more than a fancy intense, and fancy intense is worth more than fancy.
So there must be a list of ascending value like:

Faint
Very Light
Light
Fancy light
Fancy
Fancy Intense
etc.

I just need to learn of the exact order at the bottom of this list, the most pricey color grades.
The price of a stone may vary by thousands of dollars based on this order and I'm trying to determine if a certain stone is priced well.

When you look at that GIA chart the lowest-cost colors are in the upper left corner, like faint and very light.
So at the opposite corner of the chart would the vivid or deep in be priced higher?

I am guessing vivid is more expensive than deep BUT with pinks a deeper pink is closer to red, the most expensive color.
Clearly that does not make it a red, but I was wondering if deep pink is more valuable than vivid pink because deep pink is closer to a red looking diamond.

I'll bet a vendor has access to the pricing guidelines.

Shopping for a white round is easy.
There are tools and tons of information and prices listed to increase your comfort level.

Shopping for a fancy colored diamond is difficult if you want to feel you are paying a fair price.
In my mind only a price that is posted on the Internet gives me a warm fuzzy feeling, since it was set knowing that stone would not move if it was too high.
Understanding how these GIA color grades (which do not go in a straight line like from D to Z) affect pricing is an essential first step.