Precious Metals - Karat Unit of Fineness
Units of fineness - Karat.
Sponsored Links
The fineness of gold in coins, bars or jewelry is commonly measured in "karat" - parts per 24 - where
- 24 karat = 24/24 = 1 = 100 % = 1000.00 o/oo
- 18 karat = 18/24 = 0.75 = 75 % = 750.00 o/oo
- 14 karat = 14/24 = 0.583 = 58.3 % = 583.33 o/oo
- 8 karat = 8/24 = 0.333 = 33.3 % = 333.33 o/oo
Pure gold is yellow in color. Gold is commonly alloyed with silver, copper, nickel and zinc. White gold is an alloy with nickel, copper and zinc. Note that
- 24 karat gold - 100% - very soft, not recommended for jewelry
- 22 karat gold - 91.7% - soft, not recommended for jewelry
- 18 karat gold - 75% - recommended for fine jewelry
- 14 karat gold - 58.3% - used in average jewelry
- 12 karat gold - 50% - not acceptable in jewelry
- 10 karat gold - 41.7% - the lowest limit for products in "real" gold
Sponsored Links
Related Topics
-
Miscellaneous
Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
Related Documents
-
Solids and Metals - Specific Gravities
Specific gravity for common solids and metals like aluminum, asbestos, brass, calcium and many others. -
Troy Weight
Weight unit for preciuos metals like gold and silver. -
Unit Converter with commonly used Units
Common converting units for Acceleration, Area, Density, Energy, Energy per unit mass, Force, Heat flow rate, Heat flux, Heat generation per unit volume and many more.
