Suppliers to the Jewellery Trade

Technical Information Sheet

Size and Weight of Round Cut Diamonds
For reference Only - All diamonds should be weighed or measured for accuracy.

Diamond
Diameter
Carat
Weight
Carat
Fraction Weight
Diamond
Diameter
Carat
Weight
Carat
Fraction Weight
1.0 mm 0.005 ct 1/200 ct 5.2 mm 0.50 ct 1/2 ct
1.3 mm 0.01 ct 1/100 ct  
0.5625 ct
9/16 ct
1.5 mm 0.015 ct 1/64 ct (0.015625 ct)   0.625 ct 5/8 ct
1.7 mm 0.02 ct 1/50 ct 5.6 mm
0.65 ct
 
1.8 mm 0.025 ct    
0.6875 ct
11/16 ct
2.0 mm 0.03 ct 1/32 ct (0.03125 ct) 5.9 mm 0.75 ct 3/4 ct
2.2 mm 0.04 ct 1/25 ct  
0.8125 ct
13/16 ct
2.4 mm 0.05 ct 1/20 ct 6.2 mm 0.85 ct  
2.5 mm 0.06 ct 1/16 ct (0.0625 ct)  
0.875 ct
7/8 ct
2.7 mm 0.07 ct     0.9375 ct 15/16 ct
2.8 mm 0.08 ct   6.5 mm
1.00 ct
 
3.0 mm 0.10 ct 1/10 ct 7.0 mm 1.25 ct 1-1/4 ct
3.2 mm 0.12 ct 1/8 ct (0.125 ct) 7.4 mm 1.50 ct 1-1/2 ct
3.4 mm 0.15 ct   7.8 mm 1.75 ct 1-3/4 ct
  0.1875 ct 3/16 ct 8.2 mm 2.00 ct  
3.8 mm
0.20 ct
 
 8.6 mm 2.25 ct 2-1/4 ct
4.1 mm 0.25 ct 1/4 ct 9.0 mm 2.50 ct 2-1/2 ct
  0.3125 ct 5/16 ct 9.3 mm 3.00 ct  
4.4 mm 0.33 ct 1/3 ct 10.2 mm 4.00 ct  
  0.375 ct 3/8 ct 11.0 mm 5.00 ct  
4.8 mm
0.40 ct
 
 11.17 mm 6.00 ct  
  0.4375 ct 7/16 ct 12.4 mm 7.00 ct  

|  Home  |  News & Specials  |  Products  |  Search  |  Technical Support  |  FAQs  |

|  Shopping Cart  |  Privacy & Security  |  Mail & Fax Orders  |  Terms of Sale  |

|  Contacts  |  Links  |  WebBoss  |

Top of Page

Copyright @ 2001 Lacy West Supplies Ltd.
www.lacywest.com