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The Private Reserve
Ideal Cut Diamonds
In-Stock & Available:
Diamond Inventory

Ideal Cut Classifications
AGS Ideal 0 Cut
AGS-000/Triple 0 defined
Eighternity Diamonds
GIA Excellent / Ideal
Hearts & Arrows Ideals
Just Plain "Ideal"
The Ideal Differences

Fancy Shape Desc.
Asscher Cut Diamonds
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Private Reserve Terms:
Glossary of Terms
Inventory Introduction
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Engagement Rings:
 Overview of Styles
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Diamond Grading
The Expanded 4Cs
 1. Cut = Light Return
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3. Clarity
4. Carat Weight
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When is "Ideal" not?

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A word about pricing...
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Independent Laboratories
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International Ring Size Conversion Chart:

Use this chart to convert your local standard to the US ring sizes for ordering.

U.S.  Size
Diameter
in Inches
Diameter
in MM
Metric MM
Equivalent
British 
French 
German 
Japanese 
Swiss 
0000
.390
9.91
  
-
        
00
.422
10.72
  
-
        
0
.454
11.53
  
-
        
1/2
.474
11.95
  
A
        
3/4
.482
12.18
  
A 1/2
        
1
.487
12.37
38.9
B
    
1
  
1 1/4
-
12.60
39.6
B 1/2
        
1 1/2
.503
12.78
40.2
C
        
1 3/4
-
13.00
40.8
C 1/2
        
2
.520
13.21
41.5
D
41 1/2
13 1/2
2
1 1/2
2 1/4
-
13.41
42.1
D 1/2
-
-
    
2 1/2
.536
13.61
42.7
E
42 3/4
13 3/4
3
2 3/4
2 3/4
-
13.83
43.4
E 1/2
-
-
    
3
.553
14.05
44.0
F
44
14
4
4
3 1/8
-
14.15
44.3
F 1/2
-
-
    
3 1/4
-
14.25
44.6
-
-
-
    
3 3/8
-
14.36
44.9
G
45 1/4
-
5
5 1/4
3 1/2
.569
14.45
45.2
-
-
14 1/2
    
3 5/8
-
14.56
45.6
 G 1/2
-
  
6
  
3 3/4
-
14.65
45.9
H
46 1/2
    
6 1/2
4
.585
14.86
46.5
H 1/2
-
15
7
  
4 1/4
-
15.04
47.1
I 
47 3/4
    
7 3/4
4 1/2
.601
15.27
47.8
I 1/2
-
15 1/4
8
  
4 5/8
-
15.40
48.1
J
49
15 1/2
  
9
4 3/4
-
15.53
48.4
-
-
      
5
.618
15.70
49.0
J 1/2
-
15 3/4
9
  
5 1/8
-
15.80
49.3
K
50
    
10
5 1/4
-
15.90
49.6
-
-
      
5 3/8
-
16.0
50.0
K 1/2
-
  
10
  
5 1/2
.634
16.10
50.3
L
51 3/4
16
  
11 3/4
5 3/4
-
16.30
50.9
-
-
      
5 7/8
-
16.41
51.3
L 1/2
-
      
6
.650
16.51
51.5
M
52 3/4
16 1/2
12
12 3/4
6 1/4
-
16.71
52.2
M 1/2
-
      
6 1/2
.666
16.92
52.8
N
54
17
13
14
6 3/4
-
17.13
53.4
N 1/2
-
      
7
.683
17.35
54.0
O
55 1/4
17 1/4
14
15 1/4
7 1/4
-
17.45
54.7
O 1/2
-
      
7 1/2
.699
17.75
55.3
P
56 1/2
17 3/4
15
16 1/2
7 3/4
-
17.97
55.9
P 1/2
-
      
8
.716
18.19
56.6
Q
57 3/4
18
16
17 3/4
8 1/4
-
18.35
57.2
Q 1/2
-
      
8 1/2
.732
18.53
57.8
-
-
18 1/2
17
  
8 5/8
-
18.61
58.4
R
59
    
19
8 3/4
-
18.69
58.4
-
-
      
8 7/8
-
18.80
59.0
R 1/2
-
      
9
.748
18.89
59.1
-
-
19
18
  
9 1/8
-
19.10
59.4
S
60 1/4
    
20 1/4
9 1/4
-
19.22
59.7
-
-
      
9 3/8
-
19.31
60.0
S 1/2
-
      
9 1/2
.764
19.41
60.3
-
-
19 1/2
19
  
9 5/8
-
19.51
60.6
T
61 1/2
    
21 1/2
9 3/4
-
19.62
60.9
-
-
      
10
.781
19.84
61.6
T 1/2
-
20
20
  
10 1/4
-
20.02
62.2
U
62 3/4
  
21
22 3/4
10 1/2
.797
20.20
62.8
U 1/2
-
20 1/4
22
  
10 5/8
-
20.32
63.1
V
63
    
23 3/4
10 3/4
-
20.44
63.5
-
-
      
11
.814
20.68
64.1
V 1/2
-
20 3/4
23
  
11 1/8
-
20.76
64.3
W
65
    
25
11 1/4
-
20.85
64.7
-
-
      
11 3/8
-
20.94
65.0
W 1/2
-
      
11 1/2
-
21.08
65.3
-
-
21
24
  
11 5/8
.830
21.18
65.7
X
66 1/4
    
26 1/4
11 3/4
-
21.24
66.0
-
-
      
11 7/8
-
21.30
66.3
X 1/2
-
      
12
.846
21.49
66.6
Y
67 1/2
21 1/4
25
27 1/2
12 1/4
-
21.69
67.2
Y 1/2
-
      
12 1/2
.862
21.89
67.9
Z
68 3/4
21 3/4
26
28 3/4
12 3/4
-
22.10
68.5
Z 1/2
-
      
13
.879
22.33
69.1
-
-
22
27
  


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