Carat (ct)
Definition: The carat (ct) is a unit of mass used for measuring gemstones and pearls. One carat is precisely 200 milligrams (0.2 grams). It ensures standardization in the valuation of diamonds, sapphires, and other precious stones.
History: The carat originates from the seeds of the carob tree, which were historically used as counterweights due to their uniform mass. The modern metric carat (200 mg) was standardized in 1907 to eliminate regional inconsistencies. This change facilitated international trade and valuation of gemstones.
Current Use: The carat is universally used in the jewelry and gemstone industries. It provides an accurate measurement for diamonds, emeralds, and other precious stones, ensuring fair pricing in global markets.
UK Long Ton
Definition: The UK long ton, also called the imperial ton, equals 2,240 pounds or approximately 1,016 kilograms. It was widely used in British commerce and shipping before the UK adopted the metric system.
History: The long ton dates back to medieval England, where various ton weights were used for measuring bulk goods. It was standardized in the 19th century under the British Weights and Measures Act. Although largely replaced by metric units in the UK, it remained influential in naval and international trade for centuries.
Current Use: The UK long ton is mostly obsolete but still appears in maritime freight and historical records. It is occasionally used in industries where British imperial measurements were historically significant, such as shipbuilding and military logistics.
Quick Conversion Table Carat (ct) to UK Long Ton
1 Carat (ct) equal to 0.000000197 UK Long Ton
5 Carat (ct) equal to 0.000000984 UK Long Ton
10 Carat (ct) equal to 0.000001968 UK Long Ton
20 Carat (ct) equal to 0.000003937 UK Long Ton
30 Carat (ct) equal to 0.000005905 UK Long Ton
50 Carat (ct) equal to 0.000009842 UK Long Ton
75 Carat (ct) equal to 0.000014763 UK Long Ton
100 Carat (ct) equal to 0.000019684 UK Long Ton