Ceratonia siliqua harubh. "Ceratonia siliqua", the scientific name of the carob tree, derives from the Greek "kerátiοn" κεράτιον 'fruit of the carob (from "keras" κέρας 'horn'), and Latin "siliqua" 'pod, carob'. The unit "carat", used for weighing precious metal and stones, also comes from κεράτιον, as alluding to an ancient practice of weighing gold and gemstones against the seeds of the carob tree by people in the Middle East. The system was eventually standardized, and one carat was fixed at 0.2 grams. In late Roman times, the pure gold coin known as the "solidus" weighed 24 carat seeds (about 4.5 grams). As
Carat Cheung Carat Cheung Carat Cheung (; born 7 December 1987) is a Canadian-Chinese actress, model and former beauty pageant queen currently based in Hong Kong and currently under Television Broadcasts Limited (TVB) management. She is the winner of the 2012 Miss Hong Kong Pageant. Carat Cheung hails from Vancouver, British Columbia. She attended Killarney Secondary School and graduated from University of British Columbia majoring in Economics Business Studies. Cheung is also the niece of TVB television drama producer Alfred Cheung Kin-ting. Prior to returning to Hong Kong, Chueng worked as a presenter for Fairchild TV, a Chinese television channel in Canada.