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 (board game) Carat (board game) Carat is an abstract tile laying German style board game designed by Dirk Henn and published in 1993 by Queen Games and db Spiele. In 2004, after the success of "Alhambra", Queen Games released an updated version of the game with an Arabian theme called "Die Gärten der Alhambra". The game board consists of regular octagons and squares, tiled such that each square is surrounded by four octagons. Players first take turns to place square tiles on the squares to set up the game. They then place octagonal tiles around the squares. Each square tile is worth