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A beautiful range of new solid silver jewellery is now available in store. Please call in for a look!

Diamond Size Chart

Round Cut

Round cut
Milimeters Carat weight Points
1.0 0.005 0.5
1.3 0.01 1
1.5 0.015 1.5
1.7 0.02 1
1.8 0.025 2.5
2.0 0.03 3
2.1 0.035 3.5
2.2 0.04 4
2.4 0.05 5
2.5 0.06 6
2.7 0.07 7
2.8 0.08 8
2.9 0.09 9
3.0 0.10 10
3.1 0.11 11
3.2 0.12 12
3.3 0.14 14
3.4 0.15 15
3.5 0.16 16
3.6 0.17 17
3.7 0.18 18
3.8 0.20 20
3.9 0.22 22
4.0 0.25 25
4.2 0.30 30
4.4 0.33 33
4.5 0.35 35
4.6 0.38 38
4.8 0.40 40
5.0 0.50 50
5.4 0.60 60
5.5 0.63 63
5.6 0.65 65
6.0 0.75 75
6.4 0.95 95
6.6 1.00 100
6.8 1.17 117
7.0 1.25 125
7.2 1.33 133
7.5 1.55 155
7.8 1.75 175
8.0 2.00 200
8.4 2.15 215
8.6 2.25 225
9.0 2.75 275
9.4 3.00 300
9.6 3.15 315
9.8 3.35 335
10.0 3.50 350
10.2 3.75 375
10.4 4.00 400
10.6 4.25 425
10.8 4.5 450
11.0 4.75 475
11.2 5.00 500
12.0 6.50 650

Oval Cut

Round cut
Milimeters Carat weight Points
4 x 3 0.20 20
5 x 3 0.25 25
5 x 3.5 0.33 33
5 x 4 0.40 40
6 x 4 0.50 50
6.5 x 4.5 0.65 65
7 x 5 0.75 75
7.5 x 5.5 1.00 100
8 x 6 1.25 125
8.5 x 6.5 1.50 150
9 x 6 1.75 175
9 x 7 2.00 200
9.5 x 7.5 2.5 250
10 x 8 3.00 300
10 x 8.5 3.5 350
11 x 9 4.00 400
11 x 9.5 4.50 450
12 x 10 5.00 500

Marquise Cut

Round cut
Milimeters Carat weight Points
3.5 x 1.5 0.07 7
4 x 2 0.10 10
5 x 2 0.20 20
5 x 3 0.22 22
5.5 x 2.5 0.25 25
6 x 6 0.30 30
7 x 3 0.35 35
7 x 3.5 0.38 38
7 x 4 0.40 40
8 x 4 0.50 50
8.5 x 4.5 0.65 65
9 x 4 .70 70
9 x 4.5 0.75 75
9 x 5 0.80 80
9.5 x 4.5 0.85 85
10 x 4.75 1.00 100
10 x 5 1.25 125
11 x 5 1.50 150
11 x 5.5 1.65 165
12 x 6 2.00 200
13 x 5.5 2.50 250
13 x 6 2.65 265
14 x 6.5 2.87 287
14 x 7 3.00 300
15 x 7 3.75 375
16 x 8 4.50 450
18 x 9 7.00 700
20 x 10 10 1000

Princess Cut

Round cut
Milimeters Carat weight Points
2.00 0.06 6
2.25 0.08 8
2.50 0.10 10
2.75 0.13 13
3.0 0.15 15
3.25 0.20 20
3.5 0.23 23
3.75 0.25 25
4.0 0.30 30
4.42 0.35 35
4.5 0.40 40
4.75 0.50 50
5.0 0.63 63
5.25 0.75 75
5.5 1.00 100
6.0 1.25 125
7.0 1.60 160
8.0 2.25 225

Emerald Cut

Round cut
Milimeters Carat weight Points
4 x 3 0.20 20
5 x 3 0.25 25
6 x4 0.50 50
6.5 x 4.5 0.75 75
7 x 5 1.00 100
8 x 6 1.50 150
8.5 x 6.5 2.00 200
9 x 7 2.50 250
10 x 8 3.00 300
11 x 9 4.00 400
12 x 10 5.00 500

Pear Cut

Round cut
Milimeters Carat weight Points
4 x 2 0.20 20
5 x 3 0.30 30
6 x 4 0.50 50
7 x 5 0.75 75
8 x 5 1.00 100
9 x 6 1.50 150
10 x 7 2.00 200
12 x 7 2.50 250
12 x 8 3.00 300
13 x 8 3.50 350
14 x 8 4.00 400
15 x 9 5.00 500


Watt's Antiques, 45 High Street, Fochabers, IV32 7DU, Scotland, UK
Tel: 01343 820077 Email: mail@wattsantiques.com