The terms represent the purity of gold alloys used in jewelry and other decorative items. Karatage indicates the proportion of pure gold to other metals within the alloy, measured on a scale of 24. An example is that an item designated as “14 karat” contains 14 parts gold and 10 parts other metals, while “18 karat” signifies 18 parts gold and 6 parts other metals.
Higher gold content often correlates with increased value and a richer color. It may also be more suitable for individuals with metal sensitivities, as the reduced proportion of other metals minimizes the likelihood of allergic reactions. Historically, different cultures and periods have favored specific karatages based on resource availability, aesthetic preferences, and functional requirements such as durability and wear resistance.