MOISSANITE CARAT SIZES
Carat is a standard measurement of weight of precious gems. Most of us have heard of CARAT in conjunction with diamond weight as it is a rough indication of a gem's physical size. The lower the carat, the smaller the gem and lower price while higher carat means bigger gem and a higher price.
Moissanite is 18% lighter than diamond, so one carat of a moissanite weighs between 166-170 mg which translates to 0.83 - 0.85 carat of diamond equivalent weight (DWE). To express DEW, moissanite is cut to physical measurements that of an ideal cut diamond. So this means that a one (1.00) carat moissanite weights 0.83 - 0.85 carat DEW, but still measures 6.5 mm in diameter (round) making both one (1.00) carat diamond and one (1.00) carat moissanite visually appear as the same exact size. For this reason, moissanite size is expressed in mm rather than in carat. Here is a list of the most common moissanite shapes along side with their mesurments in mm and diamond equivalent weight.
ROUND
MM
DEW CT
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
15.0
16.0
0.10
0.16
0.23
0.33
0.48
0.60
0.78
1.00
1.25
1.50
1.95
2.25
2.65
3.10
3.64
4.25
4.85
5.45
6.10
7.25
7.89
9.50
9.86
12.90
16.05
CUSHION
MM
DEW CT
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
0.33
0.50
0.60
0.80
1.11
1.30
1.70
2.00
2.40
2.80
3.30
4.20
5.00
5.80
6.60
7.00
8.00
PILLOW
MM
DEW CT
7x6
8x6
8x7
9x7
9x8
10x8
10x9
11x8
11x9
12x9
12x10
1.30
1.60
2.00
2.40
2.80
3.20
3.60
4.10
5.00
5.70
6.50
PEAR
MM
DEW CT
3x2
5x3
6x4
7x5
8x5
8x6
9x6
9x7
10x7
10.5x7
10x8
11x8
12x8
13x8
14x10
15x10
0.13
0.25
0.42
0.75
0.90
1.20
1.50
1.80
2.10
2.40
2.60
3.00
3.50
5.20
7.10
7.35
MARQUISE
MM
DEW CT
4x2
5x25
6x3
7x3.5
8x4
9x4.5
10x5
11x5.5
12x6
13x6.5
14x7
16x8
0.07
0.13
0.23
0.35
0.50
0.70
1.00
1.40
1.80
2.20
2.80
3.86
OVALS
MM
DEW CT
5x3
6x4
7x5
8x5
8x6
9x6
9x7
10x7
10x8
11x8
11x9
12x8
12x10
13x9
14x10
15x10
0.26
0.49
0.96
1.40
1.52
1.70
2.19
2.50
3.11
3.50
4.28
4.70
5.93
5.80
7.10
8.20
PRINCESS
MM
DEW CT
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
13.0
14.0
0.40
0.50
0.75
1.00
1.20
1.50
2.00
2.50
3.00
3.50
4.00
5.00
5.60
6.00
7.50
9.00
9.50
10.50
12.00
ELONGATED RADIANT
MM
DEW CT
4x2
5x3
6x3
6x4
7x5
8x4
8x6
9x7
10x8
11x9
12x10
14x10
0.20
0.30
0.50
0.70
1.20
1.50
1.80
2.70
3.80
5.20
7.20
8.90
SQUARE RADIANT
MM
DEW CT
0.18
0.50
0.75
1.00
1.25
1.50
2.00
2.50
3.00
3.50
4.00
5.60
7.50
9.25
3.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10.0
11.0
12.0
HEART
MM
DEW CT
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.0
12.0
0.23
0.33
0.50
0.60
0.80
1.00
1.20
1.50
1.80
2.20
2.70
3.10
3.40
4.85
5.80
TRILLION
MM
DEW CT
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.00
12.00
13.00
0.23
0.33
0.50
0.60
0.80
1.00
1.20
1.50
1.80
2.20
2.70
3.10
3.40
4.85
5.80
6.42
BAGUETTE
MM
DEWCT
2.5x1.5
3.5x1.5
4x2
5x2.5
4x3x2
5x3x2
0.06
0.07
0.09
0.14
0.21
0.25
EMERALD
MM
DEW CT
4x2
5x3
6x4
7x5
8x6
9x7
10x8
11x9
12x10
14x10
0.10
0.27
0.60
1.20
1.90
2.80
4.00
5.00
6.50
7.60
ASSCHER
MM
DEW CT
3.0
4.0
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.0
12.0
0.40
0.65
0.75
1.00
1.30
1.60
1.80
2.30
2.70
3.20
3.90
4.40
5.30
7.00
9.25