The Polygon "Popular Diamond" report is a new report that provides a snapshot of the most researched diamonds on CertNet using the 4Cs combinations: Cut, Carat, Color and Clarity and then looking at each of the 4Cs independently.

The search activity will be expressed as a percentage of overall searches and the Supply as a percentage of overall items listed in the CertNet database. The data was compiled during a four-week period in August 2007.

CertNet is the jewelry industry’s largest online database of loose wholesale diamonds, with approximately 300,000 line items with a wholesale value in excess of $2 billion dollars.

Polygon is the largest Internet marketplace dedicated exclusively to industry professionals. Thousands of buyers and sellers across more than 20 countries use Polygon to buy and sell jewelry products.

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Shape
 

Round
Round
Round
Round
Round
Princess
Round
Princess
Round
Princess
Princess
Round
Round
Cushion
Princess
Princess
Cushion
Round
Emerald
Round

Carat
 

1.00-1.25
1.50-1.99
2.00-2.99
1.26-1.49
3.00-3.99
1.00-1.25
.50-.69
1.50-1.99
.70-.79
2.00-2.99
.70-.79
.90-.99
.80-.89
2.00-2.99
.50-.69
1.26-1.49
1.50-1.99
4.00-4.99
2.00-2.99
5.00-5.99

Color
 

G
G
G
F
G
G
G
G
G
G
G
H
G
G
G
G
G
H
G
G

Clarity
 

SI1
SI1
SI1
SI1
SI1
SI1
SI1
VS2
SI1
SI1
SI1
SI1
SI1
SI1
SI1
SI1
SI1
SI1
VS2
SI1

% of
Searches

2.75%
2.28%
2.27%
1.14%
1.09%
0.96%
0.89%
0.73%
0.69%
0.59%
0.53%
0.51%
0.50%
0.40%
0.40%
0.35%
0.32%
0.31%
0.27%
0.26%

% of
Supply

0.56%
0.19%
0.22%
0.04%
0.04%
0.17%
0.21%
0.10%
0.24%
0.05%
0.07%
0.12%
0.05%
0.04%
0.06%
0.01%
0.04%
0.02%
0.05%
0.01%

Ave. Price
per Carat

$4,165.82
$6,046.18
$8,408.67
$5,093.24
$11,157.75
$3,421.66
$2,064.05
$5,719.76
$2,739.11
$6,682.50
$2,264.49
$3,257.64
$2,946.21
$6,570.02
$1,567.33
$3,904.67
$5,391.65
$11,921.73
$7,853.58
$17,912.00

Asscher
Baguette
Bullets
Cushion
Emerald
Flanders
Half Moon
Heart
Kite
Marquise
Octagonal
Old European
Old Miner
Oval
Pear
Princess
Radiant
Round
Trapezoid
Triangular
% of
Searches

2.95%
0.06%
0.01%
4.49%
5.32%
0.01%
0.06%
0.93%
0.01%
3.33%
0.01%
0.44%
0.07%
3.15%
2.85%
16.20%
4.46%
55.10%
0.04%
0.51%
% of
Supply

2.40%
0.20%
0.08%
4.22%
5.75%
0.05%
0.60%
1.46%
0.03%
3.26%
0.01%
0.07%
0.02%
4.91%
4.16%
18.44%
5.88%
46.74%
0.35%
0.75%
Ave. Price
per Carat

$5,507.53
$2,476.10
$1,837.97
$5,503.12
$4,926.46
$3,164.70
$1,593.67
$4,236.05
$3,978.00
$3,065.13
$7,317.44
$2,643.67
$3,994.48
$4,080.31
$4,055.15
$3,346.92
$5,013.03
$4,415.10
$2,477.16
$2,393.27
FL
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
SI3
I1
I2
I3
% of
Searches

1.33%
1.90%
3.81%
5.63%
14.91%
22.37%
26.48%
17.22%
3.02%
2.69%
0.48%
0.14%
% of
Supply

0.01%
1.61%
3.78%
7.09%
17.72%
21.32%
22.15%
18.12%
3.33%
3.45%
0.60%
0.07%
Ave. Price
per Carat

$31,716.88
$8,634.96
$4,993.80
$4,676.73
$4,651.52
$4,618.46
$4,080.50
$3,578.03
$2,422.87
$1,982.72
$1,202.20
$687.58
D
E
F
G
H
I
J
K+
% of
Searches

9.31%
11.15%
17.90%
22.45%
19.93%
11.40%
4.53%
3.33%
% of
Supply

9.94%
14.11%
17.58%
18.77%
15.05%
11.12%
6.21%
4.37%
Ave. Price
per Carat

$4,641.95
$4,081.20
$4,345.35
$4,530.14
$4,096.53
$3,827.80
$3,467.71
$2,433.31
<0.30
.30-.37
.38-.45
.46-.49
.50-.69
.70-.79
.80-.89
.90-.99
1.00-1.25
1.26-1.49
1.50-1.99
2.00-2.99
3.00-3.99
4.00-4.99
5.00-5.99
>=6.00
% of
Searches

0.96%
1.20%
1.40%
0.58%
6.24%
5.26%
3.13%
3.62%
19.83%
7.49%
16.63%
17.54%
8.24%
2.93%
2.33%
2.62%
% of
Supply

3.94%
4.59%
3.10%
1.60%
10.58%
10.68%
2.58%
5.88%
26.92%
3.45%
11.36%
10.66%
3.00%
0.97%
1.00%
0.48%
Ave. Price
per Carat

$1,652.83
$1,651.69
$1,740.29
$1,726.43
$2,245.94
$2,707.11
$2,957.23
$3,259.48
$3,935.70
$4,419.14
$5,339.40
$7,293.83
$9,467.65
$11,791.33
$14,086.47
$16,364.81