If there is a fancy colored diamond associated with the rich and famous, it has to be pink. Its romance with celebrity is of relatively recent vintage; most probably dating back to 2002 when actor Ben Affleck bought Jennifer Lopez a 6.1-carat pink diamond as a gift for their short-live engagement.

1. If there is a fancy colored diamond associated with the rich and famous, it has to be
pink. Its romance with celebrity is of relatively recent vintage; most probably dating
back to 2002 when actor Ben Affleck bought Jennifer Lopez a 6.1-carat pink diamond
as a gift for their short-live engagement.
Several years later, British soccer star David Beckham offered his wife Victoria a 10-
carat pink diamond as a pricey apology for a rather public indiscretion, and among the
others who have been associated with pink diamond jewelry are supermodel Kate
Moss, who chose a baby pink diamond ring to mark the birth of her daughter, pop
diva Christina Aguilera, and, as one would expect, Elizabeth Taylor.
In recent years, pink colored diamonds have become one of the most desirable colors
in the fancy colored group. But when is pink actually pink? Although it is relatively
popular variety among colored diamond dealers and retailers, a pure pink color
diamond, without any influence of secondary color moderators, is quite rare.
Practically all have secondary color moderators which affect the beauty of the gem.
To understand the affect secondary color moderators have on a pink colored diamond,
we enlisted the help of GemePrice™ back-office engines. These engines crunch the
database with more than $100 million fancy colored diamonds currently available on
the Internet and are routinely updated. By processing this vast amount of data using
sophisticated algorithms, we can track how even subtle color changes bring about
price movement. This data is used to set up the rules for the GemePrice system to
price diamonds with moderators. Depending on the color moderator, the prices of
pure pink diamonds are marked up or down. The results of the analysis are shown in
the chart in Figure 1.
Most of the pink-body colored diamonds include slight but measurable tints of either
brown, or orange or gray. Most are the results of nitrogen impurities and/or crystal
structure defects. These tints, which generally represent less attractive colors,
negatively impact the price of the diamond. Adding even the slightest tint of brown to
the pink-body colored diamond may dramatically reduce its price between 30%
(brownish pink) to 50% (brown pink). Similar results could be shown for gray tints,
i.e. a reduction of between -30% (for grayish) to -40% (for gray). The orange
influence, however, representing a valued peach-like color, is weaker than the gray
and the brown but still negative, -10% (for orangey) to -25% (for orange) colors.
Contrary to these tints above, moderators such as violet or purple, may increase the
value of the stone. These influences are scarce as they occur mainly by rare boron
impurities (bluish tint) and/or unique crystal structure defect (reddish tint). A purple
tint, that adds a touch of a blue, may increase the value of a pink stone by between
20% (for purplish) to 30% (for purple). The most dramatic effect on the price is
caused by even the slightest tint of red. This may double the value of the gem.
We must remember that these color moderators effect on the value of diamonds are
not constant and may be subject to other parameters, such as the color intensity (the
lower the grade – the weaker the influence), the resultant color (pleasant to the

2. beholder) and the market demand for the color. Moreover, the numbers above are
relevant only for secondary color moderator. It is practically impossible to set up rules
to the effect on the price of third color moderators, such as orangey brown pink where
the orangey is the third moderator.