有關14ct就是14k的解釋：
"Karat" is a variant of "carat". First attested in English in the mid-15th century, the word "carat" came from Middle French carat, in turn from Italian carato, which came from Arabic qīrāṭ (قيراط), which came from Greek kerátion (κεράτιον) meaning carob seed (literally "small horn") (diminutive of κέρας - keras, "horn" and was a unit of weight though it was probably not used to measure gold in classical times.)
In 309 CE, Roman Emperor Constantine I began to mint a new gold coin solidus that was 1⁄72 of a libra (Roman pound) of gold equal to a mass of 24 siliqua, where each siliqua (or carat) was 1⁄1728 of a libra. This is believed to be the origin of the value of the karat.
不明白？
正常！
再問？
您請他不如問問香港黑幫14k為什麼叫14k，
不叫14ct算了。
