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Precious Stones, Beads
Semi Precious Stones
Cut Stones & Cabochon
Silver Findings & Components
Agate Beads
Rough Diamond Bead 16
10 Beads Sorty
Tube Fac
GB-2358
11 MM
More Details »
Size and Weight Chart
For faceted Gemstones
Round
(mm)
Sapphire
(carats)
Emerald
(carats)
Ruby
(carats)
2.0
0.04
0.03
0.04
2.5
0.08
0.06
0.08
3.0
0.15
0.10
0.15
3.5
0.22
0.15
0.22
4.0
0.34
0.22
0.34
4.5
0.45
0.32
0.45
5.0
0.66
0.45
0.66
5.5
0.83
0.57
0.83
6.0
1.09
0.72
1.09
6.5
1.36
0.95
1.36
7.0
1.64
1.10
1.64
7.5
2.12
1.40
2.12
8.0
2.50
1.75
2.50
Oval
(mm)
Sapphire
(carats)
Emerald
(carats)
Ruby
(carats)
5x3
0.29
0.20
0.29
6x4
0.59
0.40
0.59
7x5
1.06
0.66
1.06
8x6
1.65
1.13
1.65
9x7
2.36
1.60
2.36
10x8
3.50
2.40
3.50
11x9
4.90
3.40
4.90
12x10
6.80
4.10
6.80
Octagon
(mm)
Sapphire
(carats)
Emerald
(carats)
Ruby
(carats)
5x3
0.35
0.25
0.35
6x4
0.70
0.48
0.70
7x5
1.30
0.87
1.30
8x6
2.00
1.35
2.00
9x7
3.10
2.16
3.10
10x8
4.40
3.00
4.40
11x9
6.18
4.00
6.18
12x10
8.30
5.10
8.30
Square
(mm)
Sapphire
(carats)
Emerald
(carats)
Ruby
(carats)
2x2
0.06
0.04
0.06
3x3
0.22
0.12
0.22
4x4
0.56
0.28
0.56
5x5
0.80
0.50
0.80
Marquise
Sapphire
(carats)
Emerald
(carats)
Ruby
(carats)
4x2
0.12
0.08
0.12
4.5x2.5
0.15
0.10
0.15
5x2.5
0.20
0.12
0.20
5x3
0.24
0.16
0.24
6x3
0.29
0.21
0.29
7x3.5
0.45
0.32
0.45
8x4
0.75
0.50
0.75
9x4.5
1.00
0.65
1.00
10x5
1.30
0.95
1.30
12x6
2.06
1.50
2.06
Size to Weight conversions
Gemstone Enhancements
Gemstone Care
Special order stones available upon request.
Cabochones in various sizes available.
All above weights are based on average depth and girdle thickness. Larger stones are subject to a wider weight range.